Question

A box contains 5 brown and 4 white socks. A man takes out two socks. The probability that they are of the same colour is

Options

• `1/6`

• `5/108`

• `5/18`

• `4/9`

Answer 1

`4/9`

Explanation:

Required probability = `(""^5C_2+""^4C_2)/(""^9C_2)`

= `(10+6)/36=16/36=4/9`