If a = 3 then what is the value of (a2)3 - a?

If the average of 5 and K is equal to the average of 2 6 and K. what is the value of K?

A. 2

B. 8

C. 1

D. 3

E. 4

How much the speed of a train be increased if the dirver wishes to reduce the time to reach to a certain station in 20% less time?

A. 10%

B. 25%

C. 5%

D. 20%

E. 50%

What is the probability of not coming a number greater than 2 when a die is thrown?

A. 0.1

B. 0.2

C. 0.3

D. 0.4

E. 0.5

If 4 men or 7 boys can do a work in 29 days then 12 men and 8 boys will do the same work in:

A. 29

B. 17

C. 7

D. 21

E. 30

A man spent 10% of his money. After spending 60% of the remainder he has Rs. 72 left. How much had he in the start?

A. 300

B. 50

C. 400

D. 200

E. 100