2012
Mathematics
67ca00ce0c643c71d77dee1f
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 = 4/27THIS WEEK's
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