Question

A bag contains 6 black, 7 red, and 2 white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is black or white.

Options

• `8/15`

• `3/5`

• `2/3`

• `1/5`

Answer 1

`8/15`

Explanation:

Total number of balls = 15

Number of balls that are either black or white = 8

Hence the number of favourable outcomes of the ball drawn being black or white is 8.

We know that, Probability of an event E, P (E) `= "number of favorable outcomes"/"total number of outcomes"`

So, the required probability is `8/15`.