Question

A game consists of a spinning arrow that comes to rest pointing at one of the numbers $1,2,3,4,5,6,7,8,9,10,11,12$; as shown below.
If the outcomes are equally likely, find the probability that the pointer will point at an even number.

Answer 1

We have,

Total number of possible outcomes $=12$

Favorable outcomes for an even number are $2,4,6,8,10,12$

So, the number of favorable outcomes $=6$

Hence, P(the pointer will be at an even number) $=6/12=1/2$