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You are here: Home / Official GMAT Guides / 2020 Official GMAT Guide

2020 Official GMAT Guide

Video explanations for 2020 Official Guide for GMAT Review

This page lists the video explanations to all the quantitative problems in the Official Guide for GMAT Review 2020. The questions listed in red, 15 percent of the total, were newly added to the 2020 Official Guide for GMAT Review.

Color code: Red are questions new to the 2020 Official GMAT Guide
Color code: Blue are questions repeated from older GMAT Guides

Diagnostic Test: Begins at page 20

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48.

Problem Solving: Begins at page 146

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230.

Data Sufficiency: Begins at page 272

231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392, 393, 394, 395, 396, 397, 398, 399, 400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423, 424 425, 426, 427, 428, 429, 430, 431, 432, 433, 434, 435, 436, 437, 438, 439, 440, 441, 442, 443, 444 445, 446, 447, 448, 449, 450, 451, 452, 453, 454, 455, 456, 457, 458, 459, 460.

Segmentation by topics: 2020 Official GMAT Guide

Here I have divided the 2020 Official GMAT guide problems by topics. This is useful for students who are looking to practice on specific topics in the GMAT. I use the following segmentation in the GMATQuantum online course as part of the homework that students are required to complete after going through the concept lessons.

Number Theory

Problem Solving: 27, 41, 43, 58, 81, 88, 101, 111, 120, 127, 139, 141, 144, 147, 154, 165, 175, 176, 181, 195, 196, 200, 203, 205, 213, 219.

Data Sufficiency: 266, 284, 285, 288, 290, 291, 293, 299, 301, 304, 310, 311, 313, 318, 341, 343, 347, 351, 352, 370, 372, 374, 380, 390, 398, 405, 410, 412, 413, 415, 419, 420, 444, 446, 459.

Arithmetic

Problem Solving: 7, 8, 12, 16, 19, 20, 26, 28, 42, 48, 53, 57, 67, 74, 76, 80, 82, 87, 89, 93, 94, 103, 112, 113, 117, 135, 153, 160, 161, 169, 172, 180, 193, 207, 209, 215, 223, 225, 230.

Data Sufficiency: 238, 239, 240, 247, 282, 348, 386, 389, 400, 406, 455.

Algebra

Problem Solving: 38, 47, 60, 61, 73, 85, 90, 92, 95, 102, 104, 116, 129, 138, 155, 168, 184, 185, 189, 220, 222, 226, 228.

Data Sufficiency: 252, 255, 256, 257, 259, 262, 265, 278, 281, 286, 296, 297, 302, 305, 308, 314, 316, 337, 353, 359, 362, 364, 367, 373, 411, 417, 421, 422, 426, 432, 433, 447, 457, 458, 460.

Word Problems

Problem Solving: 2, 4, 5, 9, 10, 11, 14, 18, 22, 23, 29, 31, 33, 34, 35, 36, 39, 45, 46, 51, 55, 64, 65, 69, 71, 75, 77, 78, 83, 86, 105, 108, 110, 115, 118, 122, 123, 124, 125, 128, 130, 131, 133, 143, 149, 150, 152, 157, 167, 173, 178, 179, 186, 188, 190, 191, 192, 199, 208, 210, 216, 227, 229.

Data Sufficiency: 231, 232, 233, 235, 236, 241, 243, 244, 248, 249, 251, 254, 258, 260, 263, 264, 267, 270, 274, 275, 276, 279, 280, 283, 287, 294, 295, 300, 303, 315, 319, 323, 327, 336, 340, 342, 344, 346, 349, 350, 354, 356, 361, 363, 365, 366, 368, 375, 378, 379, 381, 383, 385, 388, 392, 393, 394, 395, 396, 397, 401, 407, 408, 416, 418, 424, 428, 429, 430, 436, 443, 445, 449, 450, 453.

Geometry

Problem Solving: 1, 25, 32, 37, 40, 44, 52, 56, 70, 72, 96, 97, 98, 99, 100, 106, 109, 119, 145, 146, 156, 159, 174, 177, 202, 224.

Data Sufficiency: 237, 246, 261, 268, 269, 271, 273, 289, 306, 307, 309, 317, 321, 322, 324, 328, 329, 330, 331, 332, 333, 334, 335, 345, 358, 360, 369, 371, 376, 391, 399, 402, 409, 423, 427, 435, 440, 442, 454, 456.

Coordinate Geometry

Problem Solving: 6, 13, 62, 68, 84, 121, 183, 218.

Data Sufficiency: 272, 325, 403, 438, 439.

Statistics

Problem Solving: 3, 15, 17, 21, 30, 49, 54, 63, 91, 107, 114, 126, 132, 136, 137, 151, 158, 164, 166, 171, 194, 211, 217.

Data Sufficiency: 234, 242, 253, 320, 338, 339, 357, 377, 382, 384, 404, 414, 425, 431, 434, 437, 441, 448, 451, 452.

Counting and Probability

Problem Solving: 24, 140, 142, 148, 162, 170, 182, 187, 201, 214, 221.

Data Sufficiency: 245, 277, 355, 387.

Sequences

Problem Solving: 50, 59, 66, 79, 132, 163, 197, 198, 204, 206, 212.

Data Sufficiency: 250, 292, 298, 312, 326.

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