q: The average mark obtained by 22 candidates in an examination is 45. The average of the first ten is 55 while the last eleven is 40 .The marks obtained by the 11th candidate is ?
Options:
(A) 2
(B) 0
(C) 9
(D) 8
(E) 6
a: Stream of consciousness: It is clear that 22 x 45 = 10 x 55 + K + 11 x 40 K = 0 The answer is (B).

question: Find the value of y from (12)^3 x 6^4 432 = y?
Options:
(A) 2356
(B) 3454
(C) 4656
(D) 3456
(E) 5184
answer: Stream of consciousness: Given Exp. = (12)3 x 64 = (12)3 x 64 = (12)2 x 62 = (72)2 = 5184
432 12 x 62 The answer is (E).

q: If north becomes south-west ant south-west becomes east and all the directions changed in the same manner,then what will be the direction for south-east?
Options:
(A) North-West
(B) North-East
(C) North
(D) West
(E) none
a: Stream of consciousness: North -> South-west
North-east -> West
East -> North-west
South-east -> North
South -> North-east
South-west -> east
West -> South-east
North-west -> south The answer is (C).

question: The inverse ratio of 3: 2: 1 is?
Options:
(A) 2:3:7
(B) 2:3:9
(C) 2:3:2
(D) 2:3:6
(E) 2:3:1
answer: Stream of consciousness: 1/3: 1/2: 1/1 = 2:3:6 The answer is (D).

q: Solve:-
444 x 444 x 444 + 555 x 555 x 555 = ?(444 x 444 - 444 x 555 + 555 x 555)
Options:
(A) 888
(B) 333
(C) 999
(D) 988
(E) 889
a: Stream of consciousness: Given Exp. = (a3 + b3) = (a + b) = (444 + 555) = 999(a2 - ab + b2) The answer is (C).

q: A boy runs 200 metres in 60 seconds. What is his speed ?
Options:
(A) 12 km/hr
(B) 24 km/hr
(C) 13 km/hr
(D) 14 km/hr
(E) 16 km/hr
a:
Stream of consciousness: 200/60 * 18/5 = 12 km/hr The answer is (A).