question: Find the value of y from (12)^3 x 6^4 432 = y?
Options:
(A) 4556
(B) 2354
(C) 4576
(D) 6768
(E) 5184
answer: 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).
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question: 2 persons can finish a job in 8 days. First person alone can finish the work in 24 days. How many days does the second person take to finish the job?
Options:
(A) 10 days
(B) 12 days
(C) 14 days
(D) 16 days
(E) 18 days
answer: Stream of consciousness: 2 persons can do work in 1 day = 1/8
First person can do work in 1 day = 1/24
Second person can do work in 1 day = 1/8-1/24 = 1/12
So Second person can finish work in 12 days The answer is (B).
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question: A train running at the speed of 90 km/hr crosses a pole in 9 seconds. Find the length of the train.
Options:
(A) 225 meter
(B) 200 meter
(C) 250 meter
(D) 210 meter
(E) 230 meter
answer: Stream of consciousness: Speed = 90*(5/18) m/sec = 25 m/sec
Length of Train (Distance) = Speed * Time
(25) * 9 = 225 meter The answer is (A).
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question: What should come in place of the question mark (?) in the following equation?
45789+ 34567 = 610+ ?
Options:
(A) 96543
(B) 13678
(C) 23456
(D) 56789
(E) 79746
answer:
Stream of consciousness: 45789+ 34567 = 610+ ?
45789+ 34567 610 = 79746 The answer is (E).
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