A man travels 370km partly by train and partly by car. If he covers 250 km by train and the rest by car, the total time taken is 4 hours. If he covers 130km by train and the rest by car, it takes him 18 minutes more. Find the speed of the train and the car, respectively. a 80km/hr, 100 km/hr b 98km/hr,100km/hr c 100km/hr,98km/hr d 100km/hr,80 km/hr

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