question: In how many different number of ways 6 men and 3 women can sit on a shopa which can accommodate persons?
Options:
(A) 200
(B) 230
(C) 504
(D) 250
(E) 260
answer: Stream of consciousness: 9p3 = 9 8 7 = 504 The answer is (C).

q: The edge of a cube is 5a cm. Find its surface?
Options:
(A) 24a8
(B) 150a2
(C) 24a1
(D) 24a2
(E) 24a7
a: Stream of consciousness: 6a2 = 6 * 5a * 5a = 150a2 The answer is (B).

question: What is the units digit of the expression 14^717^4?
Options:
(A) 0
(B) 3
(C) 4
(D) 8
(E) 6
answer: Stream of consciousness: I think answer on this one should be D too. Since we know that 14^7>17^4, as Will said one should always check if the number is positive. The answer is (D).

q: The speed of a car is 90 km in the first hour and 60 km in the second hour. What is the average speed of the car?
Options:
(A) 228
(B) 75
(C) 299
(D) 267
(E) 312
a: Stream of consciousness: S = (90 + 60)/2 = 75 kmph The answer is (B).

question: A train 460 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?
Options:
(A) 40
(B) 87
(C) 48
(D) 21
(E) 14
answer: Stream of consciousness: Speed = 45 * 5/18 = 25/2 m/sec
Total distance covered = 460 + 140 = 600 m
Required time = 600 * 2/25 = 48 se The answer is (C).

question: A pipe can fill a tank in 16 hours. Due to a leak in the bottom,it is filled in 24 hours. If the tank is full, how much time will the leak take to empty it ?
Options:
(A) 12 hrs
(B) 24 hrs
(C) 36 hrs
(D) 48 hrs
(E) 42 hrs
answer:
Stream of consciousness: Time taken by leak to empty tank = 1/(1/16-1/24) = 48 hrs The answer is (D).