What is the value of
8 cos 10° · cos 20° · cos 40°?

In this question has a sentence with three underlined parts labelled (a), (b) and (c).…

The standard deviation σ of the first N natural numbers can be obtained using which…

A committee of three has to be chosen from a group of 4 men and…

Consider the following in respect of two events A and B : 1.P(A occurs but…

One bag contains 3 white and 2 black balls, another bag contains 5 white and…