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A candidate takes three tests in success...

A candidate takes three tests in succession and the probability of passing the first test is p. The probability of passing each succeeding test is p or `p/2` according as he passes or fails in the preceding one. The candidate is selected, if he passes at least two tests. The probability that the candidate is selected ,is

A

`p^2(2-p)`

B

`p(2-p)`

C

`p+p^2+p^3`

D

`p^2(1-p)`

Text Solution

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The correct Answer is:
A
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