Question

In a box contains number stickers 1,2,3,4,5. If you pick one without looking, find the probability of getting a even number

Answer 1

The even numbers in the box is 2 and 4. So

$n(x)=2$

The total possible outcomes are 1,2,3,4, 5. So,

$n(T)=5$

The formula for the probability is,

$P=\frac{n(x)}{n(T)}$

Substitute the values in the formula to obtain the probabiliy for the even number.

$P=\frac{2}{5}$

So answer is 2/5.