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A candidate take three tests in successi...

A candidate take three tests in succession and the probability of passing the first test is p. The probability of passing ech succeeding test 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-p)`

B

`p+p^2 + p^3`

C

`p^2 (1-p)`

D

`p^2 (2-p)`

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The correct Answer is:
D
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DIPTI PUBLICATION ( AP EAMET)-PROBABILITY-EXERCISE-1C
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  13. A urn A contains 3 white and 5 black balls. Another urn B contains 6 w...

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  14. Bag A contains 2 red, 3 black balss. Bag B contains 3 red, 2 black bal...

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  15. Bag A contains 2 red, 3 black balss. Bag B contains 3 red, 2 black bal...

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