Question

A spinner has five equal parts labeled from 1 to 5. The spinner is spun twice. What is the probability of getting a 4 twice in a row?

Answer 1

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Answer 2

`(1)/(25)`

Explanation:

Given : A spinner has five equal parts labeled from 1 to 5.

The spinner is spun twice.

To Find: What is the probability of getting a 4 twice in a row?

Solution:

Numbers on spinner = {1,2,3,4,5}=5

Favorable outcome = {4}=1

So, probability of getting 4 on first spin =
`(1)/(5)`

Now probability of getting 4 on second spin =
`(1)/(5)`

So, the probability of getting a 4 twice in a row =
`(1)/(5) * (1)/(25)`

=
`(1)/(25)`

Hence the probability of getting a 4 twice in a row is
`(1)/(25)`