Ques:- If a sum of money compound annually amounts of thrice itself in 3 years. In how many years will it become 9 times itself.
A. 6
B. 8
C. 10
D. 12
E. 14
Ques:- A train travelling at a speed of 90 km/hr, crosses a pole in 10 seconds. The length of the train is
A. 100 m
B. 150 m
C. 250 m
D. 900 m