In an examination paper, there are two groups each containing 4 questions. A candidate is required to attempt 5 question…

A student is required to answer 6 out of 10 questions divided into two groups each containing 5 questions. He is not per…

There are five women and six men in a group. From this group a committee of 4 is to be chosen. How many different wa…

Ten coins are tossed simultaneously. In how many of the outcomes will the third coin turn up a head?

How many factors of 2<sup>5</sup> × 3<sup>6</sup> × 5<sup>2</sup> are pe…

A box contains 2 white, 3 black and 4 red balls. In how many ways can 3 balls be drawn from the box, if at least 1 black…

In how many ways can 5 different toys be packed in 3 identical boxes such that no box is empty, if any of the boxes may …

In how many ways can six different rings be worn on four fingers of one hand?