Comprehensive solutions to every Data Sufficiency question from the Official Guide for GMAT Review 2015 Edition in one convenient list, by the quant experts at TTP. Click the links below to check your work, learn how to solve troublesome problems, and increase your efficiency in this important area of GMAT quant.

  1. GMAT OFFICIAL GUIDE DS 1 – What is the value of…
  2. GMAT OFFICIAL GUIDE DS 2 – What percent of a group of people are women…
  3. GMAT OFFICIAL GUIDE DS 3 – In a certain class, one student is to be selected…
  4. GMAT OFFICIAL GUIDE DS 4 – If the two floors in a certain building are 9 feet…
  5. GMAT OFFICIAL GUIDE DS 5 – In College X the number of students enrolled…
  6. GMAT OFFICIAL GUIDE DS 6 – A certain expressway has Exits J, K, L and M…
  7. GMAT OFFICIAL GUIDE DS 7 – If n is an integer…
  8. GMAT OFFICIAL GUIDE DS 8 – For which type of investment, J or K…
  9. GMAT OFFICIAL GUIDE DS 9 – A citrus fruit grower receives $15 for each crate…
  10. GMAT OFFICIAL GUIDE DS 10 – If Pat saved $600 of his earnings…
  11. GMAT OFFICIAL GUIDE DS 11 – In the xy plane above…
  12. GMAT OFFICIAL GUIDE DS 12 – Water is pumped into a partially filled tank…
  13. GMAT OFFICIAL GUIDE DS 13 – Is x a negative…
  14. GMAT OFFICIAL GUIDE DS 14 – If i and j are integers..
  15. GMAT OFFICIAL GUIDE DS 15 – What is the cube root…
  16. GMAT OFFICIAL GUIDE DS 16 – If Car X followed Car Y across a certain…
  17. GMAT OFFICIAL GUIDE DS 17 – If n + k = m…
  18. GMAT OFFICIAL GUIDE DS 18 – The number of seats in the first row…
  19. GMAT OFFICIAL GUIDE DS 19 – In Triangle PQR, if PQ = x…
  20. GMAT OFFICIAL GUIDE DS 20 – What is the value of n…
  21. GMAT OFFICIAL GUIDE DS 21 – What percent of the drama club members enrolled…
  22. GMAT OFFICIAL GUIDE DS 22 – On a recent trip, Mary drove 50 miles…
  23. GMAT OFFICIAL GUIDE DS 23 – In Mr. Smith’s class, what is the ratio of…
  24. GMAT OFFICIAL GUIDE DS 24 – If the sequence S has 300…
  25. GMAT OFFICIAL GUIDE DS 25 – On a certain date, Hannah invested…
  26. GMAT OFFICIAL GUIDE DS 26 – The profit from the sale of a certain…
  27. GMAT OFFICIAL GUIDE DS 27 – If n is an integer, is n…
  28. GMAT OFFICIAL GUIDE DS 28 – Carmen currently works 30 hours per week at her…
  29. GMAT OFFICIAL GUIDE DS 29 – If 90 students auditioned for the school…
  30. GMAT OFFICIAL GUIDE DS 30 – A circular tub has a band painted around its circumference…
  31. GMAT OFFICIAL GUIDE DS 31 – If t denotes the thousandths digit…
  32. GMAT OFFICIAL GUIDE DS 32 – If A and B are positive integers…
  33. GMAT OFFICIAL GUIDE DS 33 – The weights of all dishes of type X are exactly…
  34. GMAT OFFICIAL GUIDE DS 34 – A certain high school with a total enrollment of 900 students held a science fair…
  35. GMAT OFFICIAL GUIDE DS 35 – The inside of a rectangular carton…
  36. GMAT OFFICIAL GUIDE DS 36 – For the system of equations given…
  37. GMAT OFFICIAL GUIDE DS 37 – The average (arithmetic meant) price of 3 items…
  38. GMAT OFFICIAL GUIDE DS 38 – A scientist recorded the number of eggs…
  39. GMAT OFFICIAL GUIDE DS 39 – Terry holds 12 cards…
  40. GMAT OFFICIAL GUIDE DS 40 – The selling price of an article is equal…
  41. GMAT OFFICIAL GUIDE DS 41 – Is 4^x + y…
  42. GMAT OFFICIAL GUIDE DS 42 – Can a certain rectangular sheet of glass be positioned…
  43. GMAT OFFICIAL GUIDE DS 43 – If p_1 and p_2 are the populations…
  44. GMAT OFFICIAL GUIDE DS 44 – In a random sample of 80 adults…
  45. GMAT OFFICIAL GUIDE DS 45 – The table above shows the distance…
  46. GMAT OFFICIAL GUIDE DS 46 – What is the tenths digit in the decimal representation…
  47. GMAT OFFICIAL GUIDE DS 47 – Robots X, Y, and Z each assemble component…
  48. GMAT OFFICIAL GUIDE DS 48 – If a < x < b…
  49. GMAT OFFICIAL GUIDE DS 49 – How many people are directors of both Company…
  50. GMAT OFFICIAL GUIDE DS 50 – If x and y are positive, is x/y…
  51. GMAT OFFICIAL GUIDE DS 51 – A clothing store acquired an item…
  52. GMAT OFFICIAL GUIDE DS 52 – If x and y are positive…
  53. GMAT OFFICIAL GUIDE DS 53 – If x is an integer…
  54. GMAT OFFICIAL GUIDE DS 54 – A taxi company charges f cents…
  55. GMAT OFFICIAL GUIDE DS 55 – Guy’s net income equals his gross…
  56. GMAT OFFICIAL GUIDE DS 56 – What is the value of z…
  57. GMAT OFFICIAL GUIDE DS 57 – Each gift certificate sold…
  58. GMAT OFFICIAL GUIDE DS 58 – What is the tens digit…
  59. GMAT OFFICIAL GUIDE DS 59 – Max has $125 consisting…
  60. GMAT OFFICIAL GUIDE DS 60 – What is the value of n…
  61. GMAT OFFICIAL GUIDE DS 61 – At a certain picnic…
  62. GMAT OFFICIAL GUIDE DS 62 – Stores L and M each…
  63. GMAT OFFICIAL GUIDE DS 63 – If d denotes a decimal…
  64. GMAT OFFICIAL GUIDE DS 64 – How many integers are…
  65. GMAT OFFICIAL GUIDE DS 65 – What is the total number of coins…
  66. GMAT OFFICIAL GUIDE DS 66 – In a survey of 200 college…
  67. GMAT OFFICIAL GUIDE DS 67 – What is the value of…
  68. GMAT OFFICIAL GUIDE DS 68 – Three machines K, M…
  69. GMAT OFFICIAL GUIDE DS 69 – Of the four numbers represented…
  70. GMAT OFFICIAL GUIDE DS 70 – At a certain company…
  71. GMAT OFFICIAL GUIDE DS 71 – Mary persuaded n friends to donate…
  72. GMAT OFFICIAL GUIDE DS 72 – If m is an integer…
  73. GMAT OFFICIAL GUIDE DS 73 – What is the area of…
  74. GMAT OFFICIAL GUIDE DS 74 – In the xy-coordinate plane…
  75. GMAT OFFICIAL GUIDE DS 75 – Is the positive two-digit…
  76. GMAT OFFICIAL GUIDE DS 76 – Each week a certain salesman is paid…
  77. GMAT OFFICIAL GUIDE DS 77 – A total of $60,000 was invested…
  78. GMAT OFFICIAL GUIDE DS 78 – At a bakery, all donuts…
  79. GMAT OFFICIAL GUIDE DS 79 – In the figure above, is the area…
  80. GMAT OFFICIAL GUIDE DS 80 – If r and s are positive integers…
  81. GMAT OFFICIAL GUIDE DS 81 – If the ratio of the number of teachers…
  82. GMAT OFFICIAL GUIDE DS 82 – If r > 0 and s…
  83. GMAT OFFICIAL GUIDE DS 83 – If k is an integer…
  84. GMAT OFFICIAL GUIDE DS 84 – What is the value of n in…
  85. GMAT OFFICIAL GUIDE DS 85 – If x and y are integers…
  86. GMAT OFFICIAL GUIDE DS 86 – What is the value of…
  87. GMAT OFFICIAL GUIDE DS 87 – What is the average…
  88. GMAT OFFICIAL GUIDE DS 88 – Paula and Sandy were among…
  89. GMAT OFFICIAL GUIDE DS 89 – A number of people each wrote…
  90. GMAT OFFICIAL GUIDE DS 90 – Is the number of seconds required…
  91. GMAT OFFICIAL GUIDE DS 91 – Last year, if Arturo spent…
  92. GMAT OFFICIAL GUIDE DS 92 – If a, b, c, and d…
  93. GMAT OFFICIAL GUIDE DS 93 – Is the number of members of…
  94. GMAT OFFICIAL GUIDE DS 94 – In a certain office, 50 percent…
  95. GMAT OFFICIAL GUIDE DS 95 – On the number line above, p, q, r, s, and t…
  96. GMAT OFFICIAL GUIDE DS 96 – If ⌈x⌉ denotes the least integer…
  97. GMAT OFFICIAL GUIDE DS 97 – If x and y are integers…
  98. GMAT OFFICIAL GUIDE DS 98 – Is RST…
  99. GMAT OFFICIAL GUIDE DS 99 – If r and s are the roots of the equation…
  100. GMAT OFFICIAL GUIDE DS 100 – The figure above represents a circle graph…
  101. GMAT OFFICIAL GUIDE DS 101 – If x is negative…
  102. GMAT OFFICIAL GUIDE DS 102 – What is the number of cans…
  103. GMAT OFFICIAL GUIDE DS 103 – Each of the letters in the table above represents…
  104. GMAT OFFICIAL GUIDE DS 104 – If [x] denotes the greatest integer…
  105. GMAT OFFICIAL GUIDE DS 105 – Material A costs $3 per kilogram, and Material B
  106. GMAT OFFICIAL GUIDE DS 106 – While on a straight road, car X and car Y…
  107. GMAT OFFICIAL GUIDE DS 107 – If a certain animated cartoon consists of…
  108. GMAT OFFICIAL GUIDE DS 108 – At what speed was a train traveling…
  109. GMAT OFFICIAL GUIDE DS 109 – List M (not shown) consists of 8 different…
  110. GMAT OFFICIAL GUIDE DS 110 – Tom, Jane, and Sue each purchased…
  111. GMAT OFFICIAL GUIDE DS 111 – If x and y are integers…
  112. GMAT OFFICIAL GUIDE DS 112 – If the successive tick marks shown…
  113. GMAT OFFICIAL GUIDE DS 113 – In triangle ABC, point X is the midpoint…
  114. GMAT OFFICIAL GUIDE DS 114 – A department manager distributed a number…
  115. GMAT OFFICIAL GUIDE DS 115 – Machines X and Y produced identical bottles…
  116. GMAT OFFICIAL GUIDE DS 116 – On a company-sponsored cruise…
  117. GMAT OFFICIAL GUIDE DS 117 – The length of the edging that surrounds circular…
  118. GMAT OFFICIAL GUIDE DS 118 – For any integers x and y, min(x, y) and max(x, y)…
  119. GMAT OFFICIAL GUIDE DS 119 – If arc PQR above is a semicircle…
  120. GMAT OFFICIAL GUIDE DS 120 – A certain bookcase has 2 shelves of books…
  121. GMAT OFFICIAL GUIDE DS 121 – During a 6-day local trade show…
  122. GMAT OFFICIAL GUIDE DS 122 – In the figure above, points A, B, C, D, and E lie…
  123. GMAT OFFICIAL GUIDE DS 123 – The range of the numbers in set S…
  124. GMAT OFFICIAL GUIDE DS 124 – An employee is paid 1.5 times…
  125. GMAT OFFICIAL GUIDE DS 125 – A box contains only red chips…
  126. GMAT OFFICIAL GUIDE DS 126 – What was the revenue that a theater…
  127. GMAT OFFICIAL GUIDE DS 127 – The annual rent collected by a corporation…
  128. GMAT OFFICIAL GUIDE DS 128 – The hypotenuse of a right triangle is 10 cm…
  129. GMAT OFFICIAL GUIDE DS 129 – In the xy-plane, region R consists…
  130. GMAT OFFICIAL GUIDE DS 130 – What is the volume of a…
  131. GMAT OFFICIAL GUIDE DS 131 – Six shipments of machine parts were shipped…
  132. GMAT OFFICIAL GUIDE DS 132 – Joanna bought only $0.15 stamps…
  133. GMAT OFFICIAL GUIDE DS 133 – If x, y and z are three-digit positive integers…
  134. GMAT OFFICIAL GUIDE DS 134 – The table above shows the results of a survey of 100…
  135. GMAT OFFICIAL GUIDE DS 135 – A school administrator will assign each student in a…
  136. GMAT OFFICIAL GUIDE DS 136 – If ° represents one of the operations…
  137. GMAT OFFICIAL GUIDE DS 137 – How many of the 60 cars sold…
  138. GMAT OFFICIAL GUIDE DS 138 – In Jefferson School, 300 students …
  139. GMAT OFFICIAL GUIDE DS 139 – What is the median number of employees…
  140. GMAT OFFICIAL GUIDE DS 140 – If Juan had a doctor’s appointment…
  141. GMAT OFFICIAL GUIDE DS 141 – Last year, a certain company began manufacturing…
  142. GMAT OFFICIAL GUIDE DS 142 – When a player in a certain game tossed…
  143. GMAT OFFICIAL GUIDE DS 143 – Beginning in January of last year, Carl made…
  144. GMAT OFFICIAL GUIDE DS 144 – Are all of the numbers in a certain…
  145. GMAT OFFICIAL GUIDE DS 145 – Quadrilateral RSTU shown above is…
  146. GMAT OFFICIAL GUIDE DS 146 – If the average (arithmetic mean) of…
  147. GMAT OFFICIAL GUIDE DS 147 – What was the total amount of revenue…
  148. GMAT OFFICIAL GUIDE DS 148 – Any decimal that has only a finite number…
  149. GMAT OFFICIAL GUIDE DS 149 – In the figure above, what is…
  150. GMAT OFFICIAL GUIDE DS 150 – What amount did Jean earn…
  151. GMAT OFFICIAL GUIDE DS 151 – The price per share of Stock X…
  152. GMAT OFFICIAL GUIDE DS 152 – In the figure above, if the area of…
  153. GMAT OFFICIAL GUIDE DS 153 – If Sara’s age is exactly twice…
  154. GMAT OFFICIAL GUIDE DS 154 – A report consisting of 2,600 words…
  155. GMAT OFFICIAL GUIDE DS 155 – In the rectangular coordinate system above, if OP…
  156. GMAT OFFICIAL GUIDE DS 156 – In the expression above, if xn…
  157. GMAT OFFICIAL GUIDE DS 157 – If n is a positive integer and k…
  158. GMAT OFFICIAL GUIDE DS 158 – If Carmen had 12 more tapes…
  159. GMAT OFFICIAL GUIDE DS 159 – If x is an integer…
  160. GMAT OFFICIAL GUIDE DS 160 – If n is a positive integer, is the value of b…
  161. GMAT OFFICIAL GUIDE DS 161 – The inflation index for the year 1989…
  162. GMAT OFFICIAL GUIDE DS 162 – Is 5^k…
  163. GMAT OFFICIAL GUIDE DS 163 – Every member of a certain club…
  164. GMAT OFFICIAL GUIDE DS 164 – If x < 0…
  165. GMAT OFFICIAL GUIDE DS 165 – What is the circumference of…
  166. GMAT OFFICIAL GUIDE DS 166 – What is the value of x+y…
  167. GMAT OFFICIAL GUIDE DS 167 – If n and k are positive integers…
  168. GMAT OFFICIAL GUIDE DS 168 – In a certain business, production index…
  169. GMAT OFFICIAL GUIDE DS 169 – If n is a positive integer…
  170. GMAT OFFICIAL GUIDE DS 170 – If n is a positive integer, what…
  171. GMAT OFFICIAL GUIDE DS 171 – What is the value of 2t + t – …
  172. GMAT OFFICIAL GUIDE DS 172 – If n is an inte…
  173. GMAT OFFICIAL GUIDE DS 173 – If x, y, and z are positive integers…
  174. GMAT OFFICIAL GUIDE DS 174 – Marcia’s bucket can hold…
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