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The probabilities that three students S...

The probabilities that three students Subhas, Monisha and Satabdi can solve a problem independently are p, q and r respectively.
The chance that only one of the three students solve the problem is -

A

`p+q+r`

B

`p(1-q)(1-r)+q(1-p)(1-r)+r(1-p)(1-q)`

C

`pq(1-r)+qr(1-p)+rp(1-q)`

D

none of these

Text Solution

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The correct Answer is:
B
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