Arun has a certain sum deposited in a bank at 5% per annum. The bank increases the rate of interest from 5% to 6%. After an increase in rates, Arun deposits Rs.2000 more in his account. The annual interest received by him now is Rs.220 more than before. Find his original deposit. (A) Rs. 12,000 (B) Rs. 13,250 (C) Rs. 6,792 (D) Rs. 10,000

How do you find the Maclaurin series for tanx?

Why is Axiom 5, in the list of Euclid’s axioms, considered a ‘universal truth’? (Note that the equation is not about the fifth postulate.)

The smallest composite number is ______.

(a) 2

(b) 4

(c) 1

(d) None of these

Find the arithmetic mean of the first ten odd natural numbers.

A boat goes 24 km upstream and 28 km downstream in 6 hours. It goes 30 km upstream and 21 km downstream in 6 hours and 30 minutes. The speed of the boat in still water is

A. 10 km/hr

B. 4 km/hr

C. 14 km/hr

D. 6 km/hr