Q: Find the value of m from (12)^3 x 6^4 432 = m?
Options:
(A) 2346
(B) 3546
(C) 4566
(D) 3455
(E) 5184
A: OK... Stream of consciousness: Given Exp. = (12)3 x 64 = (12)3 x 64 = (12)2 x 62 = (72)2 = 5184
432 12 x 62
The answer is (E).

Q: Two persons A and B can complete a piece of work in 40 days and 60 days respectively. If they work together, what part of the work will be completed in 6 days?
Options:
(A) 1/8
(B) 1/3
(C) 1/6
(D) 1/2
(E) 1/4
A: OK... Stream of consciousness: A's one day's work = 1/40
B's one day's work = 1/60
(A + B)'s one day's work = 1/40 + 1/60 = 1/24
The part of the work completed in 6 days = 6 (1/24) = 1/4.
The answer is (E).

Q: The average of first six prime numbers greater than 65 is?
Options:
(A) 55
(B) 77
(C) 56
(D) 67
(E) 98
A: OK... Stream of consciousness: 67 + 71 + 73 + 79 + 83 + 89 = 462/6 = 77
The answer is (B).

Q: A can do a job in 18 days and B can do it in 24 days. A and B working together will finish twice the amount of work in days?
Options:
(A) 22 1/6
(B) 22 1/2
(C) 20 4/7
(D) 22 1/9
(E) 22 1/1
A:
OK... Stream of consciousness: 1/18 + 1/24 = 7/72
72/7 = 72/7 *2 = 20 4/7 days
The answer is (C).