3 years ago

A multiple choice test consists of six questions, each of which has four choices. Each question has exactly one correct answer.

1 answer:

6 0

To get 4 or fewer correct, at least 2 answers have to be wrong. And the probability of that is:
3/4 x 3/4=9/16
1-9/16=probability that 4 or fewer are correct=7/16 ☺☺☺☺

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