70 coins of 10 paise and 50 paise are mixed in a purse. If the total value of the money in the purse is Rs. 19, find the number of each type of coin in the purse. A. Number of 10 paise coins are 60 Number of 50 paise coins are 20 B. Number of 10 paise coins are 20 Number of 50 paise coins are 40 C. Number of 10 paise coins are 40 Number of 50 paise coins are 30 D. Number of 10 paise coins are 30 Number of 50 paise coins are 50

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