I’ve classified all of the Quant Problems in the 2018 Official Guide for GMAT Review by content area. There’s a lot of overlap (e.g. triangles inscribed in circles), but I think that, fundamentally, it works. As you work though the OG the first time (yes, there will be more than one time) you should follow this classification.
Problems in bold do no appear in later official guides.
ARITHMETIC
Fractions, Decimals, Percents, and Ratios :
- Problem Solving: 1, 2, 3, 4, 5, 6, 12, 15, 36, 37, 38, 45, 55, 59, 60, 63, 75, 82, 86, 87, 105, 106, 108, 115, 119, 122, 124, 125, 131, 133, 135, 139, 153, 169, 172, 173, 210 213
- Data Sufficiency: 233, 239, 246, 250, 256, 258, 262, 269, 270, 286, 288, 292, 313, 314, 319, 321, 324, 326, 332, 333, 334, 340, 344, 368, 387, 395, 397, 403
Exponents and Roots:
- Problem Solving: 66, 68, 74, 90, 92, 112, 147, 161, 189, 200, 203, 209, 223
- Data Sufficiency: 240, 243, 249, 255, 289, 308, 342, 370, 399
Number Theory:
- Problem Solving: 44, 46, 54, 62, 73, 81, 98, 121, 126, 136, 141, 154, 165, 175, 176, 178, 181, 195, 205
- Data Sufficiency: 271, 277, 278, 285, 293, 317, 328, 329, 354, 356,357, 390
Statistics:
- Problem Solving: 14, 21, 40, 41, 52, 84, 96, 116, 137, 144, 151, 158, 164, 166, 171, 194, 211, 217
- Data Sufficiency: 244, 282, 295, 298, 300, 348, 358, 363, 375, 378, 381, 385, 392, 394, 396
Combinatorics:
Probability:
- Problem Solving: 11, 142, 162, 170, 221
- Data Sufficiency: 236, 297, 302
ALGEBRA
Algebraic Manipulation:
- Problem Solving: 16, 19, 33, 65, 216, 230
Equations:
- Problem Solving: 27, 31, 35, 51, 67, 72, 83, 91, 93, 110, 127, 138, 155, 168, 180, 222, 226
- Data Sufficiency: 247, 252, 279, 281, 303, 307, 350, 352, 366, 372, 391, 404
Inequalities:
- Problem Solving: 25, 49, 78, 185, 193, 196, 228
- Data Sufficiency: 274, 275, 291, 306, 315, 318, 320, 355, 359, 361, 365, 376, 377, 401
Functions and Formulas:
- Problem Solving: 88, 104, 109, 111, 117, 128, 184, 196
- Data Sufficiency: 364, 377
Coordinate Geometry:
- Problem Solving: 50, 56, 77, 101, 183, 218
Data Sufficiency: 264, 347, 382, 383
GEOMETRY
Lines, Angles, and Triangles:
- Problem Solving: 22, 26, 29, 39, 43, 123, 145
- Data Sufficiency: 231, 235, 237, 260, 261, 330, 335, 346, 353, 384, 386, 400
Quadrilaterals and Polygons:
- Problem Solving: 17, 18, 58, 99, 156, 174, 202, 224
- Data Sufficiency: 301, 304, 311, 367, 371, 398
Circles:
- Problem Solving: 95, 107, 146, 177
- Data Sufficiency: 263, 265, 287, 369, 379
Three Dimensional Geometry:
- Problem Solving: 32, 34, 114, 159
- Data Sufficiency: 343, 371
WORD PROBLEMS
Systems of Equations and Ratios:
- Problem Solving: 7, 13, 20, 24, 30, 42, 53, 70, 79, 85, 97, 100, 103, 134, 143, 150, 157, 160, 188, 190, 219, 225
- Data Sufficiency: 232, 234, 245, 253, 259, 268, 272, 283, 284, 290, 294, 296, 309, 310, 312, 322, 323, 325, 327, 336, 337, 338, 339, 345, 349, 351, 360, 388, 393, 402
Rates:
- Problem Solving: 8, 10, 23, 28, 64, 69, 76, 102, 113, 129, 179, 192
Data Sufficiency: 238, 251, 273, 280, 299, 341, 373, 374, 380
Overlapping Sets:
- Problem Solving: 118, 120, 152, 208, 229
- Data Sufficiency: 248, 254, 266, 267, 276, 305, 316, 362, 389
Sequences (Recursive, Arithmetic, and Exponential):
- Problem Solving: 47, 71, 89, 163, 191, 197, 198, 204, 206, 212
- Data Sufficiency: 241, 242, 257
Mixtures:
- Problem Solving: 149, 227
Variables in Choices