If the difference between the simple and the compound interest earned on a sum of money at the rate of 5% p.a. for 2 years is Rs. 16, find the principal.
(a) Rs. 6,200
(b) Rs. 6,400 (c) Rs. 6,250 (d) Cannot be determined

In a certain code language `La Ke Ta' means `go and swim' and `Ne La Se' means `you swim here' and `Pe Ke Ne Ta' means `he and you go'. Which of the following is the code for `here' in that code language ?
(a) Cannot be determined
(b) La (c) Ne (d) Se

A batsman in his 12th innings makes a score of 63 runs and there by increases his average scores by 2. What is his average after the 12th innings?
(a) 13
(b) 41 (c) 49 (d) 87

A sum of money doubles at compound interest in 6 years. In how many years will it become 16 times?
(A) 16 years
(B) 24 years (C) 48 years (D) 96 years

The sum of all even natural numbers between 1 and 81 is:
(A)3280 (B) 3321 (C) 1646 (D) 1640

Find the speed and average speed of abus which leaves Salem at 4 p.m.&reaches madurai in the same day at 8 p.m.The distancebetween the two stations is 216 km & the total time for stoppage is 1 hourbetween these stations
a) 54,72
b) 62,84 c) 72,54 d) 82,64

M is N's brother. S is D's mother and M's aunt. How is D related to M?
(a) Sister
(b) Cousin (c) Aunt (d) Cannot be determined