Question

On a 6 question multiple-choice test, where each question has 5 answers, what would be the probability of getting at least one question wrong?

Answer 1

`(24)/(5)`

Explanation:

We Know

The test has 6 questions.

Each question has 5 answers.

What would be the probability of getting at least one question wrong?

Each question can only have one correct answer, so the probability of getting a wrong answer for each question is
`(4)/(5)`

There are 6 questions on the test, so we take

`(4)/(5)` x 6 =
`(24)/(5)`

So, the probability of getting at least one question wrong is
`(24)/(5)`