The average of twelve numbers is 7. The average of first nine numbers is 6 and the average of last two numbers is 10. What is the middle number?
Options:
(A) A) 9
(B) B) 10
(C) C) 12
(D) D) 7
(E) E) 13

The total of twelve numbers = 12X7 = 84
The total of first 9 and last 2 numbers is = 9 X 6+2 X 10 = 74
So, the middle number is (84 - 74 ) = 10 So the answer is: (B).

Four of the following five parts lettered a, b, c, d and e are exactly equal. Which of the following is not equal to the other four?
Options:
(A) 24(2) 12(2) + 112 14
(B) 17 12 + 59 4
(C) 15 28 + 20
(D) 27 16 + 56 8
(E) 185 6 2 23 5

Other parts are equal to 440. So the answer is: (D).

The number N is 6,2X4, where X represents the ten's digit. If N is divisible by 9, what is the value of X?
Options:
(A) 1
(B) 3
(C) 5
(D) 7
(E) 6

Integer is divisible by 9 - Sum of digits is divisible by 9 So the answer is: (E).

If 10 crates have 94 apples each and how many apples more is required in order to make 100 apples in each crate?
Options:
(A) 5
(B) 10
(C) 15
(D) 20
(E) 60
Each crate requires 6 apples and totally there are 10 crates so required apples = 10 * 6 = 60 So the answer is: (E).