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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