q: Look at this series: 36, 34, 30, 28, 24, ... What number should come next?
Options:
(A) 20
(B) 22
(C) 25
(D) 24
(E) 26
a: Stream of consciousness: This is an alternating number subtraction series. First, 2 is subtracted, then 4, then 2, and so on. The answer is (B).

question: A train 110 meters long completely crosses a 280 meters long bridge in 38 seconds. What is the speed of the train is?
Options:
(A) 32
(B) 45
(C) 40
(D) 66
(E) 09
answer: Stream of consciousness: S = (110 + 280 /38 = 390/38 * 18/5 = 40 The answer is (C).

q: A train 520 meters long is running with a speed of 34 kmph. The time taken by it to cross a tunnel 280 meters long is?
Options:
(A) 287 sec
(B) 89 sec
(C) 48 sec
(D) 16 sec
(E) 17 sec
a: Stream of consciousness: D = 580 + 280 = 800
S = 34 * 5/18 = 9 mps
T = 800/9 = 89 sec The answer is (B).

question: If Rs.7500 are borrowed at C.I at the rate of 4% per annum, then after 2 years the amount to be paid is?
Options:
(A) 3377
(B) 2688
(C) 2688
(D) 8112
(E) 1268
answer: Stream of consciousness: A = 7500(26/25)2 = 8112 The answer is (D).

q: Two trains are traveling on parallel tracks in the same direction. The faster train travels at 150 miles per hour, while the slower train travels at 100 miles per hour. At 2 o'clock the faster train is 10 miles behind the slower one. How far apart are the two trains at 5 o'clock?
Options:
(A) 60 miles
(B) 80 miles
(C) 90 miles
(D) 140 miles
(E) 400 miles
a: Stream of consciousness: Answer = D. 140 miles
Relational speed = 150 - 100 = 50 miles per hour
In 3 hours, difference = 50 * 3 = 150 miles
Fast train trailing 10 miles, so effective difference = 150 - 10 = 140 miles The answer is (D).

q: If x<0, y>0, and |x| < |y|, which of the following must be true?
Options:
(A) x > y
(B) y^2 > x^2
(C) x^3 > y^2
(D) x > y
(E) x < y
a:
Stream of consciousness: Correct Answer: (E)
Let's go through each answer choice: (A) can never be true, since no negative is greater than a positive. (B) doesn't have to be true consider what would happen if x = -2 and y = 1. (C) can never be true, as x^3 must be negative, and y^2 must be positive. (D) can never be true, since if x < 0, -x is the same thing as |x|, and |x| > y. (E) can be manipulated by multiplying both sides by -1, which gives us x > y. Remember that x < 0, so x = |x|, and y is positive, so |y| = y. Thus x > y is the same statement as |x| > |y|, and (D) must be true. The answer is (D).