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A student appears for test I, II and III...

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

A

`p(1 +q)=1`

B

`p(1 +p)=1`

C

`pq=1`

D

`(1)/(p)+(1)/(q)=1`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2018-MULTIPLE CHOICE QUESTIONS
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