question: An analyst will recommend a combination of 3 industrial stocks, 2 transportation stocks, and 2 utility stocks. If the analyst can choose from 4 industrial stocks, 5 transportation stocks, and 3 utility stocks, how many different combinations of 7 stocks are possible?
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Options:
(A) 12
(B) 19
(C) 60
(D) 180
(E) 720
answer: Stream of consciousness: 4C3 * 5C2 * 3C2 = 4*60*3 = 720. The answer is (E).

q: The average of seven numbers is 22. The average of first three numbers is 14 and the average of last three numbers is 19. What is the middle number?
Options:
(A) 25
(B) 27
(C) 29
(D) 32
(E) 55
a: Stream of consciousness: The total of seven numbers = 7X22 = 154
The total of first 3 and last 3 numbers is = 3 X 14+3 X 19 = 99
So, the middle number is (154 - 99 ) = 55 The answer is (E).

question: The area of a triangle is with base 18m and height 6m?
Options:
(A) 88 m2
(B) 10 m2
(C) 66 m2
(D) 54 m2
(E) 31 m2
answer: Stream of consciousness: 1/2 * 18 * 6 = 54 m2 The answer is (D).

q: What will come in place of the x in the following Number series? 11, 14, 19, 22, 27, 30, 35, x
Options:
(A) 29
(B) 31
(C) 23
(D) 35
(E) 38
a: Stream of consciousness: The pattern is + 3, + 5, + 3, + 5,
So the missing term is = 35 + 3 = 38. The answer is (E).

question: Find the invalid no.from the following series 13, 18, 25, 30, 37, 40
Options:
(A) 23
(B) 35
(C) 40
(D) 45
(E) 67
answer: Stream of consciousness: The differences between two successive terms from the beginning are 7, 5, 7, 5, 7, 5. So, 40 is wrong. The answer is (C).

question: If X and Y are both positive two-digit integers and share no digits, and X > Y, what is the smallest possible value of X - Y?
Options:
(A) 0
(B) 1
(C) 2
(D) 3
(E) 9
answer:
Stream of consciousness: Answer = B = 1
20 - 19 = 30-29 = 40-39 = 50-49 = 1 The answer is (B).