question: A woman has 4 shirts, 5 pants and 2 belts. How many different clothing combinations can she wear?
Options:
(A) 11
(B) 20
(C) 40
(D) 60
(E) 4
answer: Stream of consciousness: 4 shirts x 5 pants x 2 belts = 40 The answer is (C).

q: In how many ways can you seat 6 people on a bench if one of them, Rohit, does not want to sit on the middle seat or at either end?
Options:
(A) 360
(B) 1720
(C) 2880
(D) 5040
(E) 10080
a: Stream of consciousness: Since Rohit does not want to sit on the middle seat or at either end (3 chairs), then he can choose 3 chairs to sit. The remaining 5 people can sit in 5! ways. Thus the # of arrangements is 3*5! = 360. The answer is (A).

question: At what rate percent on simple interest will a sum of money double itself in 60 years?
Options:
(A) 3 1/3%
(B) 3 1/9%
(C) 1 2/3%
(D) 3 2/3%
(E) 3 6/3%
answer: Stream of consciousness: P = (P*60*R)/100
R = 1 2/3% The answer is (C).

q: An equity analyst needs to select 3 stocks for the upcoming year and rank these securities in terms of their investment potential. If the analyst has narrowed down the list of potential stocks to 7, in how many ways can she choose and rank her top 3 picks?
Options:
(A) 21
(B) 35
(C) 210
(D) 420
(E) 840
a: Stream of consciousness: Number of ways of choosing 3 stocks = 7C3
Number of ways of ranking the chosen stocks = 3!
Hence total ways of choosing and ranking = 7C3 * 3! = 7!/4! = 7*6*5 = 210 The answer is (C).

question: A train 90 meters long is running with a speed of 54 kmph. The time taken by it to cross a tunnel 120 meters long is?
Options:
(A) 29
(B) 18
(C) 14
(D) 99
(E) 13
answer: Stream of consciousness: D = 90 + 120 = 210
S = 54 * 5/18 = 15 mps
T = 210/15 = 14 se The answer is (C).

question: Before lunch, a painter can paint a wall at a rate of r square feet per minute. The same painter, after lunch and a cup of coffee, can paint the same wall at a rate r + 1 square feet per minute, and the same wall would be finished in 30 seconds less time. What is the value of r?
Options:
(A) 1/3
(B) 3
(C) 1/2
(D) 1
(E) 2
answer:
Stream of consciousness: Convert 30 seconds to 1/2 minute
Equation: 1/r = 1/(r + 1) + 1/2
Plug options into the equation:
D fits: 1/1 = 1/(1 + 1) + 1/2 The answer is (D).