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.
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.
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.
