Answer :

Given : let A , B and C be three students whose chances of solving a problem is given i.e , P(A) = , P(B) = and P(C) = .


P() = , P() = and P()=


To Find: The probability that the problem is solved .


Here , P(the problem is solved) = 1 - P(the problem is not solved)


= 1- P( )


= 1 – [P( ) P( ) P( )]


= 1- []


= 1 -


=


Therefore , The probability that the problem is solved is .


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