Question

A box contains 7 blue socks, 13 yellow socks and 5 green socks. What is the probability of choosing a green sock at random?

1/5


1/7


5/21


5/20

Answer 1

`(1)/(5)`

Explanation:

There are 25 socks in total, only 5 of these are green.

The proportion would look like this:

`(5)/(25)=(1)/(5)`

Answer 2

1/5

Explanation:

7 + 13 =20

20 + 5 = 25

5 is a fifth of 25