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You are here: Home » GMAT Test Prep Questions » Data Sufficiency (DS)
GMAT Math Questions  Data Sufficiency (GMAT DS)
 Question 1: What is the value of X, if X and Y are two distinct integers and their product is 30?
(1) X is an odd integer
(2) X > Y
Answer & Explanation »
 Question 2: What is the standard deviation (SD) of the four numbers p, q, r, s?
(1) The sum of p, q, r and s is 24
(2) The sum of the squares of p, q, r and s is 224
Answer & Explanation »
 Question 3: How is Bill related to Betty?
(1) Cindy, the wife of Bill's only brother Chris does not have any siblings.
(2) Betty is Cindy's brother in law's wife.
Answer & Explanation »
 Question 4: Is y an integer?
(1) y^{3} is an integer
(2) 3y is an integer
Answer & Explanation »
 Question 5: If a salesman received a commission of 3% of the sales that he has booked in a month, what was the sales booked by the salesman in the month of November 2003?
 The sales booked by the salesman in the month of November 2003 minus salesman's commission was $245,000
 The selling price of the sales booked by the salesman in the month of November 2003 were 125 percent of the original purchase price of $225,000.
Answer & Explanation »
 Question 6: Is m divisible by 6?
(1) m is divisible by 3
(2) m is divisible by 4
Answer & Explanation »
 Question 7: This is a number properties question. Is ab positive?
(1) (a+b)^{2} < (ab)^{2}
(2) a = b
Answer & Explanation »
 Question 8: When Y is divided by 2, is the remainder 1?
(1) (1) ^{(Y+2)} = 1
(2) Y is prime.
Answer & Explanation »
 Question 9: Is the two digit positive integer P a prime number?
(1) (P + 2) and (P  2) are prime.
(2) (P  4) and (P + 4) are prime.
Answer & Explanation »
 Question 10: If m, s are the average and standard deviation of integers a, b, c, and d, is s > 0?
(1) m > a
(2) a + b + c + d = 0
Answer & Explanation »
 Question 11: Is x^{3} > x^{2} ?
(1) x > 0
(2) x < 1
Answer & Explanation »
 Question 12: Is y = 3?
(1) (y  3)(x  4) = 0
(2) (x  4) = 0
Answer & Explanation »
 Question 13: Is a terminating decimal?
(1) x is a multiple of 2
(2) y is a multiple of 3
Answer & Explanation »
 Question 14: Is the positive integer X divisible by 21?
(1) When X is divided by 14, the remainder is 4
(2) When X is divided by 15, the remainder is 5
Answer & Explanation »
 Question 15: A set S contains the following elements: {7, 11, 15, 19, 23, x}. What is the value of x?
(1) The elements are in arithmetic progression
(2) x is prime Answer & Explanation »
 Question 16: Is xy < 0?
(1) (1) 5x + y = 0
(2) (2) x + 5y = 0
Answer & Explanation »
 Question 17: Is triangle ABC obtuse angled?
(1) a^{2} + b^{2} > c^{2}
(2) The center of the circle circumscribing the triangle does not lie inside the triangle.
Answer & Explanation »
 Question 18: Is triangle ABC with sides a, b and c acute angled?
(1) Triangle with sides a^{2}, b^{2}, c^{2} has an area of 140 sq cms.
(2) Median AD to side BC is equal to altitude AE to side BC.
Answer & Explanation »
 Question 19: When a positive integer 'x' is divided by a divisor 'd', the remainder is 24. What is d?
(1) When 2x is divided by d, the remainder is 23.
(2) When 3x is divided by d, the remainder is 22.
Answer & Explanation »
 Question 20: How many of the numbers x, y, and z are positive if each of these numbers is less than 10?
(1) x + y + z = 20
(2) x + y = 14
Answer & Explanation »
 Question 21: Is a < b?
(1) a^{b} < b^{a}
(2) > 1
Answer & Explanation »
 Question 22: Is  a  >  b ?
(1)
(2) a + b < 0
Answer & Explanation »
 Question 23: What is the 6^{th} term of the Arithmetic sequence?
(1) The sum of the 6^{th} to the 12^{th} term of the sequence is 77.
(2) The sum of the 2^{nd} to the 10^{th} term of the sequence is 108.
Answer & Explanation »
 Question 24: Is a^{3} > a^{2}?
(1) > a
(2) a^{5} > a^{3}
Answer & Explanation »
 Question 25 : Line L is perpendicular to line K whose equation is 3y = 4x + 12; Lines L and K intersect at (p, q).
Is p + q > 0?
(1) x intercept of Line L is less than that of Line K
(2) y intercept of Line L is less than that of Line K
Answer & Explanation »
 Question 26: Is  a  > a?
(1) a^{2} < a
(2)
Answer & Explanation »
 Question 27: Does the line x + y = 6 intersect or touch the circle C with radius 5 units?
(1) Center of the circle lies in the third quadrant.
(2) Point (4, 4) does not lie inside the circle.
Answer & Explanation »

