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The Official Guide For GMAT Review 2017 With Online Question Bank And Exclusive Video

The Official Guide for GMAT Review 2017 (9781119347620) was previously published as The Official Guide for GMAT Review 2017 (9781119253884). Errors were found in the original printing that have been corrected in subsequent printings. Otherwise, all other content in both 2017 versions is identical. If you have already purchased a copy of the original The Official Guide for GMAT Review 2017 (9781119253884), you can access an errata (correction) document as well as additional information at: http://wileyactual.com/gmat The premier GMAT review guide for fully personalized preparation The Official Guide for GMAT Review 2017 is the ultimate preparation kit from the makers of the GMAT exam. You'll find success strategies and test-taking tips from the experts at The Graduate Management Admission Council, along with in-depth grammar and math review—but you'll also find so much more. This book is designed to provide you with a targeted preparation experience customized to your strengths and weaknesses. A diagnostic test helps you prioritize your study time, while the companion website (gmat.wiley.com) allows you to create your own practice tests focused on the areas you need to improve. Over 900 past exam questions are answered with explanations, and actual example essays are included with scoring information to help you plan your approach in advance. This new 2017 edition contains never-before-seen material, including 61 quantitative, 61 verbal, and 8 integrated reasoning questions with full explanations to enhance your level of preparation. The GMAT's scope and importance make it a high-pressure exam. Don't waste valuable time going over what you already know. This book helps you discover what you don't know, and tailor your review to turn weaknesses into strengths. Develop a personalized review plan based on a 100-question diagnostic test to help make the most of your study time Read actual essay topics, sample responses, and scoring information Review over 900 exam questions, 61 quantitative, 61 verbal, and 8 online integrated reasoning questions Comprehensive grammar and math review Questions organized in order of difficulty to focus your study Updated to include all the corrections from the first printing Confidence is key, but actual knowledge is what drives a high score. Thorough preparation is the most valuable advantage you can have on the GMAT, and The Official Guide for GMAT Review 2017 delivers a personalized review plan tailored to you.

Paperback: 864 pages

Publisher: Wiley; 2 edition (August 29, 2016)

Language: English

ISBN-10: 1119347629

ISBN-13: 978-1119347620

Product Dimensions: 8.5 x 1.6 x 10.9 inches

Shipping Weight: 4.2 pounds (View shipping rates and policies)

Average Customer Review: 3.4 out of 5 stars  See all reviews (25 customer reviews)

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Founded by a Stanford MBA, GMAT Genius offers the highest quality GMAT preparation services to GMAT aspirants worldwide. Our mission is crystal-clear: to help you achieve GMAT success. We have thoroughly analyzed the 2017 Official Guides and want to share our insights with you. Please note that this second edition corrects numerous errors that were contained in the original printing. Feel free to read our detailed analysis of the 2017 GMAT Official Guide or skip down to our conclusions.OVERVIEW of OFFICIAL GUIDEThe Official Guides for GMAT Review contain retired real GMAT questions, and are an essential component of your GMAT preparations. The GMAC places questions in order of increasing difficulty, based on its assessment of difficulty. This book has no overlap of practice questions with the Quant and Verbal Official Guides.The 2017 edition contains 131 new questions out of the 957 total questions (including Integrated Reasoning). Excluding the 100 questions in the Diagnostic Exam section of the book, the new questions represent just over 15% new content. These are new questions that we have not encountered before; they are not questions recycled from older GMAC resources. One formatting change in the 2017 edition is that all questions (other than Integrated Reasoning) are now numbered from 1 to 907, whereas previously each section was numbered independently.PROBLEM SOLVINGThis guide contains 254 Problem Solving questions, including the 24 Problem Solving questions in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:Easy – 82 (32%, 19 more than 2016)Medium – 55 (22%, 5 fewer)Hard – 117 (46%, 14 fewer)The Problem Solving section contains 36 new questions, with difficulty of Easy / Medium / Hard as follows: 18 / 8 / 10. This is in lieu of 36 questions from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 7 / 5 / 24. In addition, 8 Medium questions have been downgraded to Easy.GMAT Genius classifies question difficulty into five categories. Our assessment of this section skews significantly easier, and contains notable differences from the GMAC’s assessment. Our difficulty assessment is only 60.6% correlated with the GMAC’s assessment, demonstrating tremendous subjectivity involved in assessing question difficulty. Here’s our breakdown:Super Easy – 20 (8%, 2 more than 2016)Easy – 68 (27%, 2 more)Medium – 109 (43%, 5 fewer)Hard – 40 (16%, 1 more)Very Hard – 17 (7%, same)Although math questions often entail multiple math concepts, GMAT Genius classifies questions based on our assessment of the primary math concept. We break down the 254 Problem Solving questions as follows:Arithmetic - Basic: 7 (2.8%, 2 more than 2016)Arithmetic - Absolute Value: 4 (1.6%, same)Arithmetic - Divisibility/Factors/Multiples: 15 (5.9%, 1 fewer)Arithmetic - Exponents & Roots: 22 (8.7%, same)Arithmetic - Fractions & Ratios: 30 (11.8%, 3 fewer)Arithmetic - Percents: 20 (7.9%, 1 fewer)Arithmetic - Pos/Neg & Odd/Even: 1 (0.4%, same)Arithmetic - Primes: 4 (1.6%, same)Algebra - Inequalities: 5 (2%, 2 more)Algebra - Linear Equations: 13 (5.1%, 1 fewer)Algebra - Quadratics: 8 (3.1%, same)Algebra - Simultaneous Equations: 7 (2.8%, same)Algebra - Variables in Answers: 7 (2.8%, 2 more)Geometry - Circles: 5 (2%, same)Geometry - Coordinate: 8 (3.1%, 1 fewer)Geometry - Rectangles: 7 (2.8%, same)Geometry - Triangles: 6 (2.4%, same)Geometry - Other: 7 (2.8%, same)Statistics - Averages: 19 (7.5%, 1 fewer)Statistics - Other: 6 (2.4%, 2 more)Word Problems - Combinatorics: 7 (2.8%, 1 more)Word Problems - Functions & Sequences: 11 (4.3%, same)Word Problems - Groups/Sets: 7 (2.8%, 1 fewer)Word Problems - Probability: 8 (3.1%, same)Word Problems - Revenue/Profit/Interest: 8 (3.1%, same)Word Problems - Rate & Work: 12 (4.7%, same)Here’s a list of the 36 new Problem Solving questions: 2, 5, 7, 13, 19, 23, 32, 44, 45, 47, 50, 53, 62, 68, 69, 70, 71, 72, 88, 89, 91, 96, 100, 109, 116, 120, 123, 127, 128, 132, 140, 152, 192, 194, 201, 209Here’s a list of the 230 Problem Solving questions, excluding those in the Diagnostic Exam, categorized by primary math concept:Arithmetic - Basic: 2, 18, 33, 42, 140, 218Arithmetic - Absolute Value: 21, 22, 57, 183Arithmetic - Divisibility/Factors/Multiples: 40, 48, 62, 105, 108, 119, 122, 134, 158, 159, 161, 190, 225Arithmetic - Exponents & Roots: 10, 28, 58, 61, 63, 77, 95, 128, 139, 145, 163, 164, 185, 188, 196, 204, 208, 211, 223, 230Arithmetic - Fractions & Ratios: 3, 23, 25, 32, 35, 41, 52, 55, 64, 69, 76, 81, 86, 107, 113, 115, 118, 135, 136, 144, 147, 167, 178, 182, 189, 198, 215, 220, 222Arithmetic - Percents: 1, 7, 9, 15, 30, 34, 60, 68, 72, 73, 75, 79, 89, 91, 102, 133, 153, 156, 165, 202Arithmetic - Pos/Neg & Odd/Even: 54Arithmetic - Primes: 168, 200Algebra - Inequalities: 45, 67, 100, 172, 229Algebra - Linear Equations: 4, 12, 27, 59, 70, 92, 94, 104, 110, 116, 143, 162, 171Algebra - Quadratics: 46, 78, 93, 109, 137, 152, 177, 227Algebra - Simultaneous Equations: 13, 19, 31, 83, 131, 173Algebra - Variables in Answers: 6, 44, 50, 53, 125, 151, 180Geometry - Circles: 80, 106, 127, 160, 219Geometry - Coordinate: 8, 49, 66, 84, 90, 170, 212, 217Geometry - Rectangles: 16, 17, 37, 51, 82, 138, 197Geometry - Triangles: 24, 39, 126, 157Geometry - Other: 29, 97, 142, 216Statistics - Averages: 14, 20, 26, 38, 88, 99, 120, 121, 130, 141, 148, 155, 176, 184, 206, 214, 228Statistics - Other: 47, 71, 98, 150, 192, 199Word Problems - Combinatorics: 129, 166, 169, 174, 186, 209Word Problems - Functions & Sequences: 43, 74, 149, 175, 187, 191, 193, 201, 207, 224Word Problems - Groups/Sets: 101, 103, 132, 203, 226Word Problems - Probability: 11, 123, 146, 154, 194, 221Word Problems - Revenue/Profit/Interest: 36, 112, 117, 124, 181, 205, 210Word Problems - Rate & Work: 5, 56, 65, 85, 87, 96, 111, 114, 179, 195, 213DATA SUFFICIENCYThis guide contains 198 Data Sufficiency questions, including the 24 Data Sufficiency questions in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:Easy – 50 (25%, 4 more than 2016)Medium – 51 (26%, 10 more)Hard – 97 (49%, 14 fewer)The Data Sufficiency section contains 26 new questions, with difficulty of Easy / Medium / Hard as follows: 9 / 12 / 15. This is in lieu of 26 questions from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 5 / 2 / 19. The GMAC has not reclassified the difficulty of any question.GMAT Genius classifies question difficulty into five categories. Our assessment skews significantly easier, and contains notable differences from the GMAC’s assessment. Our difficulty assessment is only 59.2% correlated with the GMAC’s assessment, demonstrating tremendous subjectivity involved in assessing question difficulty. Here’s our breakdown:Super Easy – 7 (4%, 1 fewer than 2016)Easy – 50 (25%, same)Medium – 92 (46%, 1 fewer)Hard – 41 (21%, 2 more)Very Hard – 8 (4%, same)Although many math questions entail multiple math concepts, GMAT Genius classifies questions based on our assessment of the primary math concept. We break down the 198 Data Sufficiency questions as follows:Arithmetic - Basic: 13 (6.6%, 3 more than 2016)Arithmetic - Divisibility/Factors/ Multiples: 8 (4%, 1 more)Arithmetic - Exponents & Roots: 14 (7.1%, 1 more)Arithmetic - Fractions & Ratios: 12 (6.1%, same)Arithmetic - Percents: 16 (8.1%, 1 more)Arithmetic - Pos/Neg & Odd/Even: 9 (4.5%, 3 fewer)Arithmetic - Primes: 1 (0.5%, 1 more)Algebra - Inequalities: 10 (5.1%, same)Algebra - Linear Equations: 9 (4.5%, 1 more)Algebra - Quadratics: 4 (2%, 2 fewer)Algebra - Simultaneous Equations: 9 (4.5%, 1 fewer)Geometry - Circles: 5 (2.5%, 2 fewer)Geometry - Coordinate: 7 (3.5%, same)Geometry - Rectangles: 4 (2%, same)Geometry - Triangles: 10 (5.1%, 2 more)Geometry - Other: 6 (3%, 1 more)Statistics - Averages: 14 (7.1%, same)Statistics - Other: 11 (5.6%, 1 more)Word Problems - Functions & Sequences: 5 (2.5%, same)Word Problems - Groups/Sets: 11 (5.6%, 1 fewer)Word Problems - Probability: 3 (1.5%, same)Word Problems - Revenue/Profit/Interest: 8 (4%, 3 fewer)Word Problems - Rate & Work: 9 (4.5%, same)Here’s a list of the 26 new Data Sufficiency questions: 231, 237, 243, 252, 254, 255, 258, 259, 262, 274, 275, 278, 283, 288, 291, 294, 304, 305, 310, 315, 316, 325, 327, 332, 347, 259Here’s a list of the 174 Data Sufficiency questions, excluding those in the Diagnostic Exam, categorized by primary math concept:Arithmetic - Basic: 252, 265, 269, 274, 288, 294, 315, 319, 320, 337, 363, 387, 403Arithmetic - Divisibility/Factors/ Multiples: 275, 314, 323, 346, 389Arithmetic - Exponents & Roots: 240, 243, 249, 273, 277, 316, 327, 338, 356, 361, 398Arithmetic - Fractions & Ratios: 256, 268, 297, 298, 299, 312, 343, 359, 371, 386, 402, 404Arithmetic - Percents: 239, 253, 258, 264, 276, 290, 305, 306, 308, 311, 318, 325, 353, 382, 395Arithmetic - Pos/Neg & Odd/Even: 255, 266, 270, 293, 300, 330, 369, 399Arithmetic - Primes: 347Algebra - Inequalities: 246, 279, 301, 307, 324, 345, 349, 352, 401Algebra - Linear Equations: 234, 247, 272, 278, 295, 339, 341Algebra - Quadratics: 271, 310, 333, 357Algebra - Simultaneous Equations: 233, 245, 292, 309, 313, 332, 344, 351Geometry - Circles: 260, 360, 373, 376Geometry - Coordinate: 235, 261, 317, 335, 379, 384Geometry - Rectangles: 286, 296, 358Geometry - Triangles: 231, 237, 262, 334, 342, 370, 380, 383, 396Geometry - Other: 259, 289, 329, 362, 385, 400Statistics - Averages: 281, 331, 336, 348, 354, 364, 368, 375, 378, 390, 394, 397Statistics - Other: 242, 244, 284, 304, 322, 367, 381, 392, 393Word Problems - Functions & Sequences: 241, 257, 355, 365, 374Word Problems - Groups/Sets: 232, 248, 254, 280, 291, 302, 321, 372, 388Word Problems - Probability: 236, 283, 287Word Problems - Revenue/Profit/Interest: 250, 263, 267, 282, 303, 340, 391Word Problems - Rate & Work: 238, 251, 285, 326, 328, 350, 366, 377SENTENCE CORRECTIONThis book contains 158 Sentence Correction questions, including the 18 Sentence Correction questions in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:Easy – 35 (22%, same as 2016)Medium – 50 (32%, 5 more)Hard – 73 (46%, 5 fewer)The Sentence Correction section contains 21 new questions, with difficulty of Easy / Medium / Hard as follows: 7 / 9 / 5. This is in lieu of 21 questions from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 7 / 4 / 10. The GMAC has not reclassified the difficulty of any question.GMAT Genius classifies question difficulty into five categories. Our assessment skews noticeably easier, and contains notable differences from the GMAC. Our difficulty assessment is only 55.2% correlated with the GMAC’s assessment, clearly showing that there is subjectivity involved in assessing question difficulty. Here’s our breakdown:Super Easy – 3 (2%, 2 more than 2016)Easy – 44 (28%, 5 fewer)Medium – 70 (44%, 6 more)Hard – 34 (22%, 4 fewer)Very Hard – 7 (4%, 1 more)Although Sentence Correction questions typically entail multiple grammar concepts (as described on our website), GMAT Genius classifies questions based on our assessment of the primary tested concept. We classify the 158 Sentence Correction questions as follows:Verb Agreement: 18 (11%, same than 2016)Verb Tense: 22 (14%, same)Pronoun Ambiguity: 10 (6%, 1 fewer)Pronoun Agreement: 4 (3%, 2 more)Parallel Construction: 52 (33%, 4 more)Misplaced Modifiers: 17 (11%, 2 more)Idioms: 7 (4%, 1 fewer)Comparison & Quantity: 11 (7%, 3 fewer)Expression & Meaning: 17 (11%, 3 fewer)Here’s a list of the 21 new Sentence Correction questions: 668, 669, 683, 684, 685, 688, 696, 697, 703, 704, 705, 724, 725, 738, 739, 740, 747, 762, 771, 799, 803Here’s a list of the 140 Sentence Correction questions, excluding those in the Diagnostic Exam, categorized by primary grammar concept:Verb Agreement: 668, 675, 678, 691, 705, 709, 720, 749, 750, 760, 771, 789, 793, 794, 800, 807Verb Tense: 676, 683, 693, 700, 706, 710, 721, 723, 731, 737, 740, 747, 751, 755, 764, 767, 774, 780, 803, 804Pronoun Ambiguity: 670, 718, 776, 777, 779, 781Pronoun Agreement: 685, 738, 763, 765Parallel Construction: 669, 671, 681, 684, 686, 687, 690, 692, 696, 698, 701, 708, 712, 714, 715, 724, 726, 728, 730, 732, 734, 735, 736, 741, 742, 743, 748, 752, 754, 756, 759, 761, 762, 766, 768, 778, 782, 788, 790, 795, 799, 801, 802, 806Misplaced Modifiers: 682, 703, 704, 707, 711, 716, 717, 722, 729, 739, 744, 746, 787, 791, 797, 798Idioms: 672, 694, 697, 757, 786, 796Comparison & Quantity: 677, 679, 689, 702, 758, 770, 772, 773, 775, 792, 805Expression & Meaning: 673, 674, 680, 688, 695, 699, 713, 719, 725, 727, 733, 745, 753, 769, 783, 784, 785CRITICAL REASONINGThis book contains 141 Critical Reasoning questions, including the 17 Critical Reasoning questions in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:Easy – 41 (29%, 1 more than 2016)Medium – 45 (32%, same)Hard – 55 (39%, 1 fewer)The Critical Reasoning section contains 19 new questions, with difficulty of Easy / Medium / Hard as follows: 4 / 11 / 4. This is in lieu of 19 questions from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 3 / 11 / 5. The GMAC has not reclassified the difficulty of any question.GMAT Genius classifies question difficulty into five categories. Our assessment skews slightly easier, but contains notable differences from the GMAC. Our difficulty assessment is 73.2% correlated with the GMAC’s assessment, clearly indicating subjectivity involved in assessing question difficulty. Here’s our breakdown:Super Easy – 0 (0%, same as 2016)Easy – 45 (32%, 1 more)Medium – 50 (35%, 1 fewer)Hard – 33 (23%, 1 fewer)Very Hard – 13 (9%, 1 more)We have grouped the questions based on the question type categorization that GMAT Genius uses for Critical Reasoning (as described on our website). We break down the 141 Critical Reasoning questions as follows:Weaken: 27 (19%, 2 more than 2016)Strengthen: 29 (21%, 3 more)Assumption: 14 (10%, 2 fewer)Reasoning: 5 (4%, 3 fewer)Conclusion: 9 (6%, 2 more)Explain: 17 (12%, 1 more)Evaluate: 16 (11%, 2 fewer)Boldface: 9 (6%, same)Complete the Passage: 15 (11%, 1 fewer)Here’s a list of the 19 new Critical Reasoning questions: 546, 549, 562, 571, 582, 587, 592, 599, 607, 610, 612, 616, 617, 618, 619, 627, 629, 661, 666Here’s a list of the 124 Critical Reasoning questions, excluding those in the Diagnostic Exam, categorized by CR question type:Weaken: 548, 574, 584, 589, 600, 606, 617, 618, 620, 621, 623, 627, 629, 640, 643, 644, 654, 658, 663, 666, 667Strengthen: 545, 546, 547, 550, 560, 564, 568, 569, 571, 575, 580, 592, 594, 595, 598, 599, 602, 604, 610, 612, 626, 639, 647, 649, 656, 660, 665Assumption: 552, 581, 585, 590, 607, 608, 616, 628, 635, 642, 650, 655, 657Reasoning: 559, 565, 578, 597, 633Conclusion: 544, 582, 591, 619, 645, 653, 661Explain: 549, 551, 554, 555, 557, 566, 567, 587, 596, 614, 615, 622, 630, 648, 664Evaluate: 553, 556, 558, 570, 572, 579, 586, 631, 632, 634, 637, 641, 662Boldface: 563, 573, 624, 625, 636, 638, 646, 651, 659Complete the Passage: 561, 562, 576, 577, 583, 588, 593, 601, 603, 605, 609, 611, 613, 652READING COMPREHENSIONThis book contains 156 Reading Comprehension questions across 31 passages, including the 17 Reading Comprehension questions in 3 passages in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:Easy – 51 (33%, 3 fewer than 2016)Medium – 73 (47%, 8 more)Hard – 32 (21%, 5 fewer)The Reading Comprehension section contains 21 new questions in 5 passages, with difficulty of Easy / Medium / Hard as follows: 13 / 3 / 5. This is in lieu of 21 questions in 3 passages from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 5 / 16 / 0. In this edition, the GMAC has upgraded 11 Easy questions and downgraded 10 Hard questions to Medium difficulty.GMAT Genius classifies question difficulty into five categories. Whereas the GMAC assigns the same difficulty to all questions for a given passage (except in the Diagnostic Exam section), GMAT Genius assesses the difficulty of each question individually. Our assessment skews slightly harder, but contains notable differences from the GMAC. Our difficulty assessment is only 46.1% correlated with the GMAC’s assessment, in large part due to different difficulty assessment methodologies. Here’s our breakdown:Super Easy – 6 (4%, 1 more than 2016)Easy – 33 (21%, 4 more)Medium – 67 (43%, 7 fewer)Hard – 40 (26%, same)Very Hard – 10 (6%, 2 more)We have grouped the questions based on the question type categorization that GMAT Genius uses for Reading Comprehension (as described on our website). We break down the 156 Reading Comprehension questions as follows:Primary Purpose: 24 (15%, same than 2016)Author's Tone: 10 (6%, same)Organization: 4 (3%, same)Function: 18 (12%, 2 fewer)Specific Reference: 38 (24%, 3 fewer)Inference: 50 (32%, 2 more)Critical Reasoning: 12 (8%, 3 more)Here’s a list of the 21 new Reading Comprehension questions: 415 to 423, 427 to 430, 460 to 462, 529 to 533INTEGRATED REASONINGThis Official Guide includes online access to 50 Integrated Reasoning practice questions. The IR set includes 8 new questions that we have not seen before, replacing 8 questions that were in the 2016 edition. The 50 questions consist of the following four types:Multi-Source Reasoning – 18 (3 changed)Table Analysis – 6 (1 changed)Graphics Interpretation – 10 (1 changed)Two-Part Analysis – 16 (3 changed)For the first time with IR in the Official Guides, the GMAC has assigned a difficulty rating to each question. Each type has difficulty of Easy / Medium / Hard as follows:Multi-Source Reasoning – 6 / 6 / 6Table Analysis – 2 / 2 / 2Graphics Interpretation – 3 / 4 / 3Two-Part Analysis – 5 / 6 / 5Total – 16 / 18 / 16For IR, GMAT Genius classifies question difficulty into the same three categories. Except for Two-Part Analysis, our assessment skews significantly easier, and contains notable differences from the GMAC. Our difficulty assessment is only 25.3% correlated with the GMAC’s assessment, clearly showing that there is subjectivity involved in assessing question difficulty. Here’s our breakdown of Easy / Medium / Hard:Multi-Source Reasoning – 9 / 8 / 1Table Analysis – 2 / 4 / 0Graphics Interpretation – 3 / 5 / 2Two-Part Analysis – 1 / 9 / 6Total – 15 / 26 / 9Here’s a list of the 8 new Integrated Reasoning questions: 9, 10, 11, 21, 28, 35, 41, 43ONLINE INTERFACEThe book includes an access code (see inside back cover) that provides 12-month usage of an online version of this Official Guide. Since the GMAT is a computer-based test, we believe that it is advisable to work though the questions online. We recommend that you use Exam Mode rather than Practice Mode, since we recommend that students practice using timed question sets that replicate test day conditions.The online practice interface has improved significantly from last year’s version. The publisher implemented most of our recommendations. In particular, note the following improvements:1) The test interface more closely resembles GMATPrep.2) Exam Mode is now default mode, and you cannot skip questions in Exam Mode.3) The overview screen shows the number of questions answered and that remain unanswered, for each question type and difficulty level.4) All questions now indicate the corresponding book number, for easier cross-referencing.5) Integrated Reasoning is now incorporated into the main interface, rather than using a separate interface.6) The system now has a significantly longer period before it logs-out your session.7) All session timing is now fully accurate.Our only significant concern with the online interface is that the system limits you to 10 saved sessions. Once you reach this limit, you must delete at least one saved session in order to keep practicing. But doing so puts all the questions from that saved session back into the unanswered question pool. As such, we recommend that you separately track which question types / difficulties you have already completed. Furthermore, we suggest completing all Easy questions in a maximum of 10 sessions, advancing to Medium questions in max 10 sessions, and finally focusing on the Hard questions in max 10 sessions towards the end of your prep.If you have any suggestions for further improving the online interface, please let us know and we will pass your input on to the publisher of the Official Guides.OTHER NOTESThe Official Guides are for practicing with real GMAT questions, not for learning the underlying concepts. The book contains a 40-page Math Review section that provides a very high-level overview of the math concepts tested on the GMAT. This math review will be highly inadequate except perhaps for the most advanced math students. Similarly, the brief introductions to the concepts tested on the verbal section are highly inadequate. We recommend that you use additional study materials to learn the math and verbal concepts.Although all questions include answer explanations, many GMAT test takers are far from satisfied with these explanations. Math explanations can be brief and hard-to-understand for non-advanced students, and are sometimes convoluted or inefficient. Most GMAT test takers consider the Sentence Correction explanations quite cryptic. The Critical Reasoning and Reading Comprehension explanations, however, are reasonably good overall.CONCLUSIONSThe Official Guide has two primary weaknesses, in our opinion:1) An insufficient amount of difficult practice questions, particularly based on GMAT Genius’ assessment of difficulty2) Math answer explanations that are too often either brief or convoluted and Sentence Correction explanations that are too crypticDespite these flaws, the Official Guide is an essential source of GMAT practice. We believe that every GMAT aspirant must use this book (or the prior edition). For these reasons, we give this book a 5-star rating. For the best value, we recommend purchasing this book as part of The Official Guide to the GMAT Review 2017 Bundle + Question Bank + Video. If you already have the 2016 edition of this book, however, the replacement of 62 math questions and 61 verbal questions is not sufficient to make this edition worth purchasing.GMAT Genius provides extensive free GMAT preparation advice on the GMAT Genius website at GMATgenius.com/gmat-preparation/. In addition, we offer the highest-quality private GMAT tutoring to students worldwide. Please let us know if we can provide any assistance with your GMAT prep. We wish you tremendous success with the GMAT!

I started GMAT Club - online MBA community; my GMAT score is 750 (49, 42), and here are my thoughts about this book:First of all - if you own the previous version (2nd Edition), there are no new questions in the this book. The only reason you may want to purchase these is to have the online quiz engine available to you but it is a pretty bad system and not worth buying the guide for. (see screenshots I uploaded). It may be worth it, if the system is improved.The main issue with the first edition was low question difficulty. This edition addresses the issue slightly, but as you can see, not by much. One issue that was fixed is the total number of questions. The first edition claimed (just like this one) to have 300 questions, but only had 294 - how can you make that mistake in the Official Guide for Quantitative Review? The question split is 176 for PS and 124 for DS.~~~ Strengths ~~~1. Real GMAT questions retired from past tests2. Online quiz engine allows you to build practice sets using the OG but it is very weak and cumbersome (more below)3. Practice questions follow actual GMAT test patterns (it's great to have one's ear trained, esp. in verbal)~~~ Weaknesses ~~~1. The quiz system is too simplistic and cumbersome. For example I have no idea how to start working on question 10. I have to restart from the beginning every single time and it seems it is not even tracking what questions I have attempted??? Very odd... perhaps I have been spoiled with good GMAT Prep and other CAT Test interfaces. I am struggling here.2. Questions are EASY in general (only about 5 questions are really a 700-level) based on GMAT Club member feedback.3. Does not include any test-taking strategies. Though it has a few short review sections for each area, they are weak and very unfriendly4. Questions are predominantly low to medium in difficulty which is often not representative of questions one encounters on the test5. We really could have used some new questions. The official Guide questions are generally on the EASY side.6. There is a 100% overlap with previous edition.P.S. If you own the previous edition, I could see some still buying the book for the advantage of having the online practice quiz access, but the issues that the online quiz engine has I would not buy it.Let me know if you have any questions - i reply to commentsBB, Founder of GMAT Club750, q49, v42.

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