q: A bullet train 140 m long is running at 60 kmph. In how much time will it pass a platform 310 m long?
Options:
(A) 34 Seconds
(B) 22 Seconds
(C) 41 Seconds
(D) 24 Seconds
(E) 27 Seconds
a: Stream of consciousness: 27 Seconds
Distance travelled = 140 + 310m = 450m
Speed = 60 * 5/8 = 50/3m
Time = 450 * 3/50 = 27 Seconds The answer is (E).

question: A corporation triples its annual bonus to 50 of its employees. What percent E of the employees' new bonus is the increase?
Options:
(A) 50%
(B) 6623%
(C) 100%
(D) 200%
(E) 300%
answer: Stream of consciousness: E of the employees' new bonus is the increase Hence The answer is (B).

q: How many positive integers less than 50 have a reminder 01 when divided by 4?
Options:
(A) 13
(B) 14
(C) 15
(D) 16
(E) 17
a: Stream of consciousness: 1 also gives the remainder of 1 when divided by 4. So, there are total of 13 numbers. The answer is (A).

question: When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 4 times, what is the probability that it will land twice on heads and twice tails?
Options:
(A) 1/8
(B) 1/4
(C) 1/16
(D) 1/32
(E) 1/2
answer: Stream of consciousness: Must be twice on heads and twice on tails
1/2*1/2*1/2*1/2 = 1/16 The answer is (C).

q: At what rate percent on simple interest will a sum of money double itself in 70 years?
Options:
(A) 1 3/7%
(B) 3 1/9%
(C) 3 9/3%
(D) 3 2/3%
(E) 3 6/3%
a: Stream of consciousness: P = (P*70*R)/100
R = 1 3/7% The answer is (A).

q: A telephone company needs to create a set of 3-digit area codes. The company is entitled to use only digits 2, 4 and 3, which can be repeated. If the product of the digits in the area code must be even, how many different codes can be created?
Options:
(A) 20
(B) 26
(C) 24
(D) 22
(E) 30
a:
Stream of consciousness: Total # of codes possible is 3*3*3 = 27. Oit of those 27 codes only the product of 333 will be odd, the remaining 26 will have either 2 or 4 in them, which ensures that their product will be even. Therefore the number of codes where the product of the digits is even = (total) - (restriction) = 27 - 1 = 26. The answer is (B).