q: In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:
Options:
(A) 6
(B) 7
(C) 8
(D) 9
(E) 5
a: Stream of consciousness: Speed in still water = 1 (11 + 5)/2 kmph = 8 kmph. The answer is (C).

question: Find the least number must be subtracted from 568219 so that remaining no.is divisible by 5?
Options:
(A) 0
(B) 1
(C) 2
(D) 3
(E) 4
answer: Stream of consciousness: On dividing 568219 by 5 we get the remainder 4, so 4 should be subtracted The answer is (E).

q: The ages of Rahul and Madhan differ by 16 years. Six years ago, Madhan's age was thrice as that of Rahul's,find their present ages
Options:
(A) 14 years, 30 years
(B) 12 years, 28 years
(C) 16 years, 34 years
(D) 18 years, 38 years
(E) none of these
a: Stream of consciousness: Let Rahul's age = x years
So, Madhan's age = ( x + 16 )years
Also, 3(x - 6) = x + 16 - 6 or, x = 14
Rahul's age = 14 years
And, Madhan's age 14 + 16 = 30 years The answer is (A).

question: Look at this series: 0.05, 0.2, ____, 3.2, 12.8, ... What number should fill the blank?
Options:
(A) 0.5
(B) 0.6
(C) 0.9
(D) 0.7
(E) 0.8
answer: Stream of consciousness: This is a simple multiplication series. Each number is 4 times greater than the previous number. The answer is (E).

q: How many five-digit numbers satisfy this property.: The last digit (unit's digit) of the square of the two-digit number is 3 ?
Options:
(A) 33
(B) 66
(C) 0
(D) 99
(E) 132
a: Stream of consciousness: A number ending with 3 can never be a perfect square. The answer is (C).

q: A man sells two articles for Rs.3600 each and he gains 40% on the first and loses 40% on the next. Find his total gain or loss?
Options:
(A) 16% loss
(B) 400
(C) 4000
(D) 324
(E) 8% LOSS
a:
Stream of consciousness: (40*40)/100 = 16%loss The answer is (A).