A tyre manufacturing company kept a record of the distance covered before a tyre needed to be replaced. The table shows the results of 1000 cases. Distance (in km) Frequency Less than 4000 20 4000 to 9000 210 9001 to 14000 325 More than 14000 445 If you buy a tyre from this company, what is the probability that it will need to be replaced after it has covered a distance somewhere between 4000 km and 14000 km? (a) 0.65 (a) 0.625 (a) 0.125 (a) None of these

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