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1) Classes X, Y and Z with 20, 30 and 50 students respectively. The averages score in Physics of students in class Y is 16 more than that of those in class Z and the average score of those in class X is 2 more than the overall average of scores in X, Y and Z. What is the positive difference between average of class Z and class X.

a) 7

b) 7.5

c) 8

d) 8.5

e) 9

2) The numbers 1 to 25 (both included) are distributed into 5 sets of 5 numbers each. If the average of the medians of these 5 sets is A. What is the positive difference between the minimum and the maximum value A can take.

a) 7

b) 8

c) 9

d) 10

e) 11

3) The mean of 5 unique positive integers if 33. What is the positive difference between the maximum and minimum possible values of the median of this set, if the average of the 3 largest terms within this set is 39?

a) 10

b) 11

c) 12

d) 13

e) 14

4) Consider 5 distinct positive numbers p, q, r, s, and t. The average of these numbers is k. If we remove q from this set, the average drops to m (m is less than k). Average of r, q, s and t is K. We also know that r is less than s and t is less than k. The difference between r and q is equal to the difference between t and s. Average of p, q, r and t is greater than m. Write down p, q, r, s and t in ascending order.

a) t r p s q

b) t p r s q

c) p t r q s

d) t p r q s

e) p t r s q

5) Consider 4 numbers p, q, r and s. The minimum average of some three of these four numbers is 30 and the maximum average of some three of these 4 is 40. What is the range of values the average(A) of all 4 numbers can take?

A) 31.5<= A <= 37.5

B) 31.5 <= A <= 37

C) 32 <= A <= 36.5

D) 32.5 <= A <= 37

E) 32.5 <= A<= 37.5--== Message from the GMAT Club Team ==--

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