Question: On a true or false test containing 3 questions a student guesses each answer. Find the probability of the following events. a.all 3 answers are

On a true or false test containing 3 questions a student guesses each answer. Find the probability of the following events.

a.all 3 answers are correct;

b.exactly 2 answers are correct;

c.at least 2 answers are correct;

d.at most 1 is correct.

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