Q 2384023857.     A student appears for tests `A, B` and `C`. He is successful if he passes either in
tests `A` and `B` or in tests `A` and `C`. The probabilities of the student passing tests

`A, B` and `C` are respectively `p, q` and `1/2`

If the probability that the student is
successful is `1/2`, then we can have

BITSAT Mock
A

`p = q = 1`

B

`p = q = 1/2`

C

` p = 0, q = 1`

D

infinitely many values of the pairs `(p, q)`

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