Q: If P(A) = 2/15, P(B) = 4/15, and P(A B) = 11/15 Find P(A|B)
Options:
(A) 11/4
(B) 2/3
(C) 3/2
(D) 4/5
(E) 4/7
A: OK... Stream of consciousness: P(A|B) = P(A B)/P(B)
P(A|B) = (11/15)/(4/15) = 11/4.
The answer is (A).

Q: Find the mean proportional between 25 & 36?
Options:
(A) A) 59
(B) B) 30
(C) C) 63
(D) D) 65
(E) E) 67
A: OK... Stream of consciousness: Formula = ab
A = 25 and B = 36
2536 = 5 6 = 30
The answer is (B).

Q: Steve traveled the first 2 hours of his journey at 40 mph and the last 3 hours of his journey at 80 mph. What is his average speed of travel for the entire journey?
Options:
(A) 61mph
(B) 62mph
(C) 63mph
(D) 64mph
(E) 65mph
A: OK... Stream of consciousness: (2*40+3*80)/5 = 64mph
The answer is (D).

Q: What is theleast number should be added to 1056, so the sum of the number is completely divisible by 23?
Options:
(A) 1
(B) 2
(C) 4
(D) 6
(E) 7
A:
OK... Stream of consciousness: (1056 / 23) gives remainder 21
21 + 2 = 23, So we need to add 2
The answer is (B).