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

A

`235/256`

B

`21/256`

C

`3/256`

D

`253/256`

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Four person independently solve a certain problem correctly with probabilities 1/2,3/4,1/4,1/8dot Then the probability that he problem is solve correctly by at least one of them is (235)/(256) b. (21)/(256) c. 3/(256) d. (253)/(256)

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Knowledge Check

  • A problem in mathematics is given to three students A, B and C and their respective probability of solving the problem is (1)/(2),(1)/(3) and (1)/(4) . Then the probability that the problem is solved, is -

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