question: The floor of a rectangular room is 18 m long and 12 m wide. The room is surrounded by a veranda of width 2 m on all its sides. The area of the veranda is :
Options:
(A) 124 m2
(B) 126 m2
(C) 136 m2
(D) 158 m2
(E) None of these
answer: Stream of consciousness: Area of the outer rectangle = 22 16 = 352 m2
Area of the inner rectangle = 18 12 = 216 m2
Required area = (352 216) = 136 m2 The answer is (C).

q: What is the greatest positive integer x such that 5^x is a factor of 125^10?
Options:
(A) 5
(B) 9
(C) 10
(D) 20
(E) 30
a: Stream of consciousness: 125^10 = (5^3)^10 = 5^30 The answer is (E).

question: Look at this series: 8, 43, 11, 41, __, 39, 17, ... What number should fill in the blank?
Options:
(A) 8
(B) 14
(C) 43
(D) 44
(E) 9
answer: Stream of consciousness: Answer: Option B
This is a simple alternating addition and subtraction series. The first series begins with 8 and adds 3; the second begins with 43 and subtracts 2. The answer is (B).

q: A train of 24 carriages, each of 60 meters length, when an engine also of 60 meters length is running at a speed of 60 kmph. In what time will the train cross a bridge 1.5 km long?
Options:
(A) 4
(B) 3
(C) 5
(D) 7
(E) 9
a: Stream of consciousness: D = 25 * 60 + 1500 = 3000 m
T = 3000/60 * 18/5 = 180 sec = 3 mins The answer is (B).

question: A boy runs 200 metres in 24 seconds. What is his speed?
Options:
(A) 20 km/hr
(B) 24 km/hr
(C) 30 km/hr
(D) 32 km/hr
(E) 34 km/hr
answer: Stream of consciousness: 200/24 * 18/5 = 30 km/hr The answer is (C).

question: Look at this series: 0.7, 2.1, ____, 18.9, 56.7, ... What number should fill the blank?
Options:
(A) 6.3
(B) 5.3
(C) 6.2
(D) 6.1
(E) 4.3
answer:
Stream of consciousness: This is a simple multiplication series. Each number is 3 times greater than the previous number. The answer is (A).