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A student appears for tests I, II and III. The student is successful if the passes either in tests I and II or tests I and III. The probabilities of the student passing in tests I, II and III are p,q and `(1)/(2)`, respectively. If the probability that the student is successful, is `(1)/(2)`, then

A

`p=q = 1`

B

`p = q =1/2`

C

`p = 1, q=0`

D

`p=1, q = 1/2`

Text Solution

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The correct Answer is:
C
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