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Four persons independently solve a certa...

Four persons independently solve a certain problem correctly with probabilities `1/2,3/4,1/4,1/8` . Then the probability that the problem is solved correctly by atleast one of them is :

A

`(235)/(256)`

B

`(21)/(256)`

C

`(3)/(256)`

D

`(253)/(256)`

Text Solution

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The correct Answer is:
A
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