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You are here: Home » GMAT Test Prep Questions » Data Sufficiency (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: Data Sufficiency : Is x³ > x² ?
    (1)    x > 0
    (2)    x < 1
    Answer & Explanation »
    
    
12. Question 12: Data Sufficiency : Is y = 3?
    (1)    (y - 3)(x - 4) = 0
    (2)    (x - 4) = 0
    Answer & Explanation »
    
    
13. Question 13: Is a terminating decimal?
    (1)    x is a multiple of 2
    (2)    y is a multiple of 3
    Answer & Explanation »
    
    
14. Question 14: Data Sufficiency : 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: Data Sufficiency : 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: Data Sufficiency : 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 »