passpadi

2012

Mathematics

JAMB

The probability that a student passes a physics test is 2/3. If he takes three physics tests, what is the probability that he passes two of the tests?

A.

2/27

B.

3/27

C.

4/27

D.

5/3

Correct Answer: 4/27

Explanation

Pass(P) = 2/3 , Fail(F) = 1/3 T = P.P.F ==> 2/3 × 2/3 × 1/3 = 4/27

Pass(P) = 2/3 , Fail(F) = 1/3 T = P.P.F ==> 2/3 × 2/3 × 1/3 = 4/27
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