Increase your accuracy and efficiency in a key area of GMAT quant with these step-by-step solutions to every Data Sufficiency problem in the GMAT Official Guide 2018, explained by the quant experts at TTP.

Click below to learn solutions to questions that you answered incorrectly, pinpoint where you went wrong, and see the fastest ways to solve these types of problems.

Looking to take your GMAT quant study to the next level? Try a 5-day trial of our comprehensive online quant course for just $1 to see why Target Test Prep has earned a 5-star rating on Beat the GMAT.

  1. GMAT OFFICIAL GUIDE DS 231 – In the figure above, point D is on AC. What is the degree…
  2. GMAT OFFICIAL GUIDE DS 232 – A citrus fruit grower receives $15 for each crate…
  3. GMAT OFFICIAL GUIDE DS 233 – A certain mixture of paint requires blue, yellow, and red…
  4. GMAT OFFICIAL GUIDE DS 234 – If Pat saved $600 of his earnings…
  5. GMAT OFFICIAL GUIDE DS 235 – In the xy plane above…
  6. GMAT OFFICIAL GUIDE DS 236 – Each of the marbles in a jar is either red or…
  7. GMAT OFFICIAL GUIDE DS 237 – In the figure above, what is the value of…
  8. GMAT OFFICIAL GUIDE DS 238 – Water is pumped into a partially filled tank…
  9. GMAT OFFICIAL GUIDE DS 239 – What is the value of 10 percent of…
  10. GMAT OFFICIAL GUIDE DS 240 – What is the cube root…
  11. GMAT OFFICIAL GUIDE DS 241 – If sequence S has 120 terms…
  12. GMAT OFFICIAL GUIDE DS 242 – The number of seats in the first row…
  13. GMAT OFFICIAL GUIDE DS 243 – If u > 0 and v > 0, which is greater…
  14. GMAT OFFICIAL GUIDE DS 244 – What was the range of the selling prices of the 30 wallets…
  15. GMAT OFFICIAL GUIDE DS 245 – Three houses are being sold…
  16. GMAT OFFICIAL GUIDE DS 246 – Is rw…
  17. GMAT OFFICIAL GUIDE DS 247 – Is x…
  18. GMAT OFFICIAL GUIDE DS 248 – How many people in a group of 50 own…
  19. GMAT OFFICIAL GUIDE DS 249 – What is the value of w…
  20. GMAT OFFICIAL GUIDE DS 250 – A certain investment earned a fixed rate of 4 percent…
  21. GMAT OFFICIAL GUIDE DS 251 – On a recent trip, Mary drove 50 miles…
  22. GMAT OFFICIAL GUIDE DS 252 – What is the value of t
  23. GMAT OFFICIAL GUIDE DS 253 – For a certain car repair, the total charge consisted…
  24. GMAT OFFICIAL GUIDE DS 254 – George has a total of B books in his library, 25 of which are hardcover fiction…
  25. GMAT OFFICIAL GUIDE DS 255 – Is w+h^4…
  26. GMAT OFFICIAL GUIDE DS 256 – In Mr. Smith’s class, what is the ratio of…
  27. GMAT OFFICIAL GUIDE DS 257 – If the sequence S has 300…
  28. GMAT OFFICIAL GUIDE DS 258 – If a is a 3-digit integer and b is a 3-digit integer…
  29. GMAT OFFICIAL GUIDE DS 259 – In each of the last five years, Company K donated p percent of its annual profits to…
  30. GMAT OFFICIAL GUIDE DS 260 – Is the area of the triangular region above…
  31. GMAT OFFICIAL GUIDE DS 261 – A, B, C, and D are points on a line. If C is the midpoint of…
  32. GMAT OFFICIAL GUIDE DS 262 – The people in a line waiting to buy tickets to a show…
  33. GMAT OFFICIAL GUIDE DS 263 – Square ABCD is inscribed in circle O…
  34. GMAT OFFICIAL GUIDE DS 264 – Lines k and m are parallel to each other…
  35. GMAT OFFICIAL GUIDE DS 265 – In cross section, a tunnel that carries one lane of one-way traffic is a semicircle…
  36. GMAT OFFICIAL GUIDE DS 266 – In a certain group of 50 people…
  37. GMAT OFFICIAL GUIDE DS 267 – Of a group of 50 households, how many have…
  38. GMAT OFFICIAL GUIDE DS 268 – On a certain date, Hannah invested…
  39. GMAT OFFICIAL GUIDE DS 269 – Do at least 60 percent of the students in…
  40. GMAT OFFICIAL GUIDE DS 270 – The profit from the sale of a certain…
  41. GMAT OFFICIAL GUIDE DS 271 – If n is an integer, is n…
  42. GMAT OFFICIAL GUIDE DS 272 – Carmen currently works 30 hours per week at her…
  43. GMAT OFFICIAL GUIDE DS 273 – A certain plumber charges $92 for each job…
  44. GMAT OFFICIAL GUIDE DS 274 – If x and y are positive numbers…
  45. GMAT OFFICIAL GUIDE DS 275 – If A and B are positive integers…
  46. GMAT OFFICIAL GUIDE DS 276 – Every object in a box is either a sphere or a cube…
  47. GMAT OFFICIAL GUIDE DS 277 – If x and y are positive integers, is xy…
  48. GMAT OFFICIAL GUIDE DS 278 – If a and b are integers, is a + b + 3 an…
  49. GMAT OFFICIAL GUIDE DS 279 – If x and y are positive integers, what is the value of…
  50. GMAT OFFICIAL GUIDE DS 280 – A certain truck uses 1/12+kv^2 gallons of fuel per mile…
  51. GMAT OFFICIAL GUIDE DS 281 – If x = 2t and y = t/3, what is…
  52. GMAT OFFICIAL GUIDE DS 282 – Last school year, each of the 200 students at…
  53. GMAT OFFICIAL GUIDE DS 283 – A clothing manufacturer makes jackets that are wool or cotton or a combination…
  54. GMAT OFFICIAL GUIDE DS 284 – Each month, Jim receives a base salary plus…
  55. GMAT OFFICIAL GUIDE DS 285 – If x is a positive integer greater than 1…
  56. GMAT OFFICIAL GUIDE DS 286 – By what percent was the price of a certain television…
  57. GMAT OFFICIAL GUIDE DS 287 – Jack wants to use a circular rug on his rectangular office floor…
  58. GMAT OFFICIAL GUIDE DS 288 – In the multiplication table above, each letter…
  59. GMAT OFFICIAL GUIDE DS 289 – If n is an integer, is (0.1)^n…
  60. GMAT OFFICIAL GUIDE DS 290 – For a basic monthly fee of F yen, Noak’s first cell phone allowed him…
  61. GMAT OFFICIAL GUIDE DS 291 – The weights of all dishes of type X are exactly…
  62. GMAT OFFICIAL GUIDE DS 292 – If r and t are three-digit positive integers…
  63. GMAT OFFICIAL GUIDE DS 293 – Is the product of two positive integers x and y divisible by…
  64. GMAT OFFICIAL GUIDE DS 294 – A certain high school with a total enrollment of 900 students held a science fair…
  65. GMAT OFFICIAL GUIDE DS 295 – The average (arithmetic meant) price of 3 items…
  66. GMAT OFFICIAL GUIDE DS 296 – A company makes and sells two products, P and Q…
  67. GMAT OFFICIAL GUIDE DS 297 – Jill has applied for a job with each of two different companies. What is the probability…
  68. GMAT OFFICIAL GUIDE DS 298 – A scientist recorded the number of eggs…
  69. GMAT OFFICIAL GUIDE DS 299 – A conveyor belt moves bottles at a constant speed of 120 centimeters per second…
  70. GMAT OFFICIAL GUIDE DS 300 – If x, y, and z are positive numbers, what is the value…
  71. GMAT OFFICIAL GUIDE DS 301 – The rectangular rug shown in the figure above…
  72. GMAT OFFICIAL GUIDE DS 302 – Terry holds 12 cards…
  73. GMAT OFFICIAL GUIDE DS 303 – Missing
  74. GMAT OFFICIAL GUIDE DS 304 – In the parallelogram shown, what is…
  75. GMAT OFFICIAL GUIDE DS 305 – In a product test of a common cold remedy, x percent of the patients…
  76. GMAT OFFICIAL GUIDE DS 306 – Is x < 5
  77. GMAT OFFICIAL GUIDE DS 307 – Is 4^x + y…
  78. GMAT OFFICIAL GUIDE DS 308 – Is zp…
  79. GMAT OFFICIAL GUIDE DS 309 – In each game of a certain tournament, a contestant either loses 3 points or…
  80. GMAT OFFICIAL GUIDE DS 310 – At the beginning of the year, the Finance Committee and the Planning Committee of…
  81. GMAT OFFICIAL GUIDE DS 311 – Can a certain rectangular sheet of glass be positioned…
  82. GMAT OFFICIAL GUIDE DS 312 – In a random sample of 80 adults…
  83. GMAT OFFICIAL GUIDE DS 313 – Max purchased a guitar for a total of $624…
  84. GMAT OFFICIAL GUIDE DS 314 – What is the sum of a certain pair of…
  85. GMAT OFFICIAL GUIDE DS 315 – If a < x < b…
  86. GMAT OFFICIAL GUIDE DS 316 – How many people are directors of both Company…
  87. GMAT OFFICIAL GUIDE DS 317 – The sum of 4 different odd integers is 64…
  88. GMAT OFFICIAL GUIDE DS 318 – Was the number of books sold at Bookstore X last week greater than…
  89. GMAT OFFICIAL GUIDE DS 319 – From May 1 to May 30 in the same year…
  90. GMAT OFFICIAL GUIDE DS 320 – If x and y are positive…
  91. GMAT OFFICIAL GUIDE DS 321 – A merchant discounted the sale price of a coat…
  92. GMAT OFFICIAL GUIDE DS 322 – A taxi company charges f cents…
  93. GMAT OFFICIAL GUIDE DS 323 – If the positive integer n is added to each of the integers 69, 94, and 121…
  94. GMAT OFFICIAL GUIDE DS 324 – Guy’s net income equals his gross…
  95. GMAT OFFICIAL GUIDE DS 325 – If the ratio of the number of teachers…
  96. GMAT OFFICIAL GUIDE DS 326 – For a certain city’s library, the average cost…
  97. GMAT OFFICIAL GUIDE DS 327 – Each gift certificate sold…
  98. GMAT OFFICIAL GUIDE DS 328 – What is the tens digit…
  99. GMAT OFFICIAL GUIDE DS 329 – Three dice, each of which has its 6 sides numbered 1 through 6…
  100. GMAT OFFICIAL GUIDE DS 330 – On the number line, point R has coordinate r and point T has…
  101. GMAT OFFICIAL GUIDE DS 331 – S is a set of points in the plane…
  102. GMAT OFFICIAL GUIDE DS 332 – Stores L and M each…
  103. GMAT OFFICIAL GUIDE DS 333 – If d denotes a decimal…
  104. GMAT OFFICIAL GUIDE DS 334 – In the two-digit integers 3◻ and 2△…
  105. GMAT OFFICIAL GUIDE DS 335 – Two points, N and Q (not shown)…
  106. GMAT OFFICIAL GUIDE DS 336 – Did the sum of the prices of three shirts…
  107. GMAT OFFICIAL GUIDE DS 337 – What is the total number of coins…
  108. GMAT OFFICIAL GUIDE DS 338 – A telephone station has x processors…
  109. GMAT OFFICIAL GUIDE DS 339 – Kim and Sue each bought some roses and some daisies…
  110. GMAT OFFICIAL GUIDE DS 340 – Jazz and blues recordings accounted for 6 percent of the $840 million…
  111. GMAT OFFICIAL GUIDE DS 341 – On a certain nonstop trip, Marta…
  112. GMAT OFFICIAL GUIDE DS 342 – If x is a positive integer, what is the value of √(x+24) – …
  113. GMAT OFFICIAL GUIDE DS 343 – A tank is filled with gasoline to a depth of exactly 2 feet…
  114. GMAT OFFICIAL GUIDE DS 344 – At a certain company…
  115. GMAT OFFICIAL GUIDE DS 345 – A group consisting of several families visited an amusement park…
  116. GMAT OFFICIAL GUIDE DS 346 – What is the area of…
  117. GMAT OFFICIAL GUIDE DS 347 – In the xy-coordinate plane…
  118. GMAT OFFICIAL GUIDE DS 348 – What is the ratio of the average (arithmetic mean) height of students in class X …
  119. GMAT OFFICIAL GUIDE DS 349 – Is the positive two-digit…
  120. GMAT OFFICIAL GUIDE DS 350 – If 2^(x + y) = 4^8…
  121. GMAT OFFICIAL GUIDE DS 351 – Each week a certain salesman is paid…
  122. GMAT OFFICIAL GUIDE DS 352 – At a bakery, all donuts…
  123. GMAT OFFICIAL GUIDE DS 353 – In the figure above, is the area…
  124. GMAT OFFICIAL GUIDE DS 354 – If r and s are positive integers…
  125. GMAT OFFICIAL GUIDE DS 355 – If r > 0 and s…
  126. GMAT OFFICIAL GUIDE DS 356 – If k is an integer…
  127. GMAT OFFICIAL GUIDE DS 357 – If x is a positive integer, then is x…
  128. GMAT OFFICIAL GUIDE DS 358 – What is the value of n in…
  129. GMAT OFFICIAL GUIDE DS 359 – If x and y are integers…
  130. GMAT OFFICIAL GUIDE DS 360 – Last year, if Arturo spent…
  131. GMAT OFFICIAL GUIDE DS 361 – If a, b, c, and d…
  132. GMAT OFFICIAL GUIDE DS 362 – Is the number of members of…
  133. GMAT OFFICIAL GUIDE DS 363 – On the number line above, p, q, r, s, and t…
  134. GMAT OFFICIAL GUIDE DS 364 – If ⌈x⌉ denotes the least integer…
  135. GMAT OFFICIAL GUIDE DS 365 – If x and y are integers…
  136. GMAT OFFICIAL GUIDE DS 366 – If r and s are the roots of the equation…
  137. GMAT OFFICIAL GUIDE DS 367 – The figure above represents an L-shaped garden…
  138. GMAT OFFICIAL GUIDE DS 368 – The only articles of clothing in a certain closet are shirts, dresses, and jackets…
  139. GMAT OFFICIAL GUIDE DS 369 – The figure above represents a circle graph…
  140. GMAT OFFICIAL GUIDE DS 370 – If x is negative…
  141. GMAT OFFICIAL GUIDE DS 371 – What is the number of cans…
  142. GMAT OFFICIAL GUIDE DS 372 – Each of the letters in the table above represents…
  143. GMAT OFFICIAL GUIDE DS 373 – Material A costs $3 per kilogram, and Material B…
  144. GMAT OFFICIAL GUIDE DS 374 – At what speed was a train traveling…
  145. GMAT OFFICIAL GUIDE DS 375 – Tom, Jane, and Sue each purchased…
  146. GMAT OFFICIAL GUIDE DS 376 – What is the value of x if x^3…
  147. GMAT OFFICIAL GUIDE DS 377 – For any integers x and y, min(x, y) and max(x, y)…
  148. GMAT OFFICIAL GUIDE DS 378 – A certain bookcase has 2 shelves of books…
  149. GMAT OFFICIAL GUIDE DS 379 – In the figure above, points A, B, C, D, and E lie…
  150. GMAT OFFICIAL GUIDE DS 380 – In planning for a trip, Joan estimated…
  151. GMAT OFFICIAL GUIDE DS 381 – A certain list consists of 3 different numbers…
  152. GMAT OFFICIAL GUIDE DS 382 – Line ℓ lies in the xy-plane and does not pass through…
  153. GMAT OFFICIAL GUIDE DS 383 – In the xy-plane, the straight-line graphs of the three equations above …
  154. GMAT OFFICIAL GUIDE DS 384 – In the figure above, PQR and STU are identical equilateral triangles…
  155. GMAT OFFICIAL GUIDE DS 385 – The range of the numbers in set S…
  156. GMAT OFFICIAL GUIDE DS 386 – The hypotenuse of a right triangle is 10 cm…
  157. GMAT OFFICIAL GUIDE DS 387 – Six shipments of machine parts were shipped…
  158. GMAT OFFICIAL GUIDE DS 388 – If x, y and z are three-digit positive integers…
  159. GMAT OFFICIAL GUIDE DS 389 – The table above shows the results of a survey of 100…
  160. GMAT OFFICIAL GUIDE DS 390 – A school administrator will assign each student in a…
  161. GMAT OFFICIAL GUIDE DS 391 – If q, s, and t are all different numbers…
  162. GMAT OFFICIAL GUIDE DS 392 – What is the median number of employees…
  163. GMAT OFFICIAL GUIDE DS 393 – Last year, a certain company began manufacturing…
  164. GMAT OFFICIAL GUIDE DS 394 – Beginning in January of last year, Carl made…
  165. GMAT OFFICIAL GUIDE DS 395 – Are all of the numbers in a certain…
  166. GMAT OFFICIAL GUIDE DS 396 – If the average (arithmetic mean) of…
  167. GMAT OFFICIAL GUIDE DS 397 – What amount did Jean earn…
  168. GMAT OFFICIAL GUIDE DS 398 – In the figure above, if the area of…
  169. GMAT OFFICIAL GUIDE DS 399 – If n is a positive integer and k…
  170. GMAT OFFICIAL GUIDE DS 400 – What is the value of x+y…
  171. GMAT OFFICIAL GUIDE DS 401 – If n and k are positive integers…
  172. GMAT OFFICIAL GUIDE DS 402 – In a certain business, production index…
  173. GMAT OFFICIAL GUIDE DS 403 – If n is a positive integer, what…
  174. GMAT OFFICIAL GUIDE DS 404 – What is the value of 2t + t – …
Share
Tweet
WhatsApp
Share