Q: The H.C.F. of two numbers is 11 and their L.C.M. is 7700. If one of the numbers is 275, then the other is:
Options:
(A) 279
(B) 283
(C) 308
(D) 318
(E) 328
A: OK... Stream of consciousness: Other number = (11 x 7700)/275 = 308.
The answer is (C).

Q: How many positive integers less than 60 have a reminder 01 when divided by 3?
Options:
(A) 13
(B) 14
(C) 15
(D) 16
(E) 20
A: OK... Stream of consciousness: 1 also gives the remainder of 1 when divided by 3. So, there are total of 20 numbers.
The answer is (E).

Q: If anitha rows 65 km upstream and 105 km down steam taking 13 hours each, then the speed of the stream
Options:
(A) 8.4 kmph
(B) 5.5 kmph
(C) 6 kmph
(D) 8 kmph
(E) 8.2 kmph
A: OK... Stream of consciousness: Speed upstream = 65/13 = 5 kmph
Speed down stream = 105/5 = 21 kmph
Speed of stream = (21-5) = 8 kmph
The answer is (D).

Q: Find the C.I. on a sum of Rs.1600 for 9 months at 20% per annum, interest being compounded quarterly?
Options:
(A) 2266
(B) 7767
(C) 2522
(D) 1677
(E) 2671
A:
OK... Stream of consciousness: A = 1600(21/20)3 = 2522
The answer is (C).