question: A 160 meter long train crosses a man standing on the platform in 18 sec. What is the speed of the train?
Options:
(A) 96 kmph
(B) 94 kmph
(C) 32 kmph
(D) 56 kmph
(E) 76 kmph
answer: Stream of consciousness: S = 160/18 * 18/5 = 32 kmph The answer is (C).


q: When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 3 times, what is the probability that it will land twice on heads and once on tails?
Options:
(A) 1/16
(B) 1/3
(C) 1/6
(D) 1/2
(E) 1/8
a: Stream of consciousness: Must be once on twice and once on tails
1/2*1/2*1/2 = 1/8 The answer is (E).


question: What is the area of a square with perimeter 8P ?
Options:
(A)  16p^2
(B)  4P^2
(C)  P^2/4
(D)  P/16
(E)  P^2/16
answer: Stream of consciousness: Each side is 2p
A = (2p)^2 = 4(p^2) The answer is (B).


q: There are 20 balls in a box: 11 balls are green, 6 are blue and 3 are white. Then 1 green and 1 blue balls are taken from the box and put away. What is the probability that a green ball is selected at random from the box?
Options:
(A) 1/13
(B) 10/18
(C) 3/13
(D) 5/13
(E) 6/13
a: Stream of consciousness: If 1 green and 1 blue ball are taken from the box, then there are 10 green, 5 blue and 3 white balls, a total of 18 balls. If one ball is selected at random, the probability that it is green is given by 10 / 18 The answer is (B).


question: Find the area of a parallelogram with base 24 cm and height 16 cm.
Options:
(A) 384 cm^2
(B) 200 cm^2
(C) 250 cm^2
(D) 350 cm^2
(E) 400 cm^2
answer: Stream of consciousness: Area of a parallelogram = base * height = 24 * 16 = 384 cm2 The answer is (A).


question: The average of seven numbers is 18. The average of first three numbers is 14 and the average of last three numbers is 23. What is the middle number?
Options:
(A) 25
(B) 27
(C) 15
(D) 32
(E) 34
answer:
Stream of consciousness: The total of seven numbers = 7X18 = 126
The total of first 3 and last 3 numbers is = 3 X 14+3 X 23 = 111
So, the middle number is (126 - 111 ) = 15 The answer is (C).