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You are here: Home GMAT Test Prep Questions Data Sufficiency (DS)

GMAT Math Questions - Data Sufficiency (GMAT DS)

  1. 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

  2. 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

  3. 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

  4. Question 4: Is y an integer?
    (1)    y3 is an integer
    (2)    3y is an integer      
    Answer & Explanation

  5. 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?
    1. The sales booked by the salesman in the month of November 2003 minus salesman's commission was $245,000
    2. 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

  6. Question 6: Is m divisible by 6?
    (1)    m is divisible by 3
    (2)    m is divisible by 4
    Answer & Explanation

  7. Question 7: This is a number properties question. Is ab positive?
    (1)    (a+b)2 < (a-b)2
    (2)    a = b
    Answer & Explanation

  8. Question 8: When Y is divided by 2, is the remainder 1?
    (1)    (-1) (Y+2) = -1
    (2)    Y is prime.
    Answer & Explanation

  9. 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

  10. 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

  11. Question 11: Is x3 > x2 ?
    (1)    x > 0
    (2)    x < 1
    Answer & Explanation

  12. Question 12: Is y = 3?
    (1)    (y - 3)(x - 4) = 0
    (2)    (x - 4) = 0
    Answer & Explanation

  13. Question 13: Is x/y a terminating decimal?
    (1)    x is a multiple of 2
    (2)    y is a multiple of 3
    Answer & Explanation

  14. 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

  15. 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

  16. Question 16: Is xy < 0?
    (1)   (1) 5|x| + |y| = 0
    (2)   (2) |x| + 5|y| = 0
    Answer & Explanation

  17. Question 17: Is triangle ABC obtuse angled?
    (1)    a2 + b2 > c2
    (2)    The center of the circle circumscribing the triangle does not lie inside the triangle.
    Answer & Explanation

  18. Question 18: Is triangle ABC with sides a, b and c acute angled?
    (1)    Triangle with sides a2, b2, c2 has an area of 140 sq cms.
    (2)    Median AD to side BC is equal to altitude AE to side BC.
    Answer & Explanation

  19. 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

  20. 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

  21. Question 21: Is a < b?
    (1)    ab < ba
    (2)    a/b > 1
    Answer & Explanation

  22. Question 22: Is | a | > | b |?
    (1)    1/(a - b) > 1/(b - a)
    (2)    a + b < 0
    Answer & Explanation

  23. Question 23: What is the 6th term of the Arithmetic sequence?
    (1)    The sum of the 6th to the 12th term of the sequence is 77.
    (2)    The sum of the 2nd to the 10th term of the sequence is 108.
    Answer & Explanation

  24. Question 24: Is a3 > a2?
    (1)    1/a > a
    (2)    a5 > a3
    Answer & Explanation

  25. 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

  26. Question 26: Is | a | > a?
    (1)    a2 < a
    (2)    (a/2) > (2/a)
    Answer & Explanation

  27. 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

 


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