Q. 494.0( 1 Vote )

Mark the correct alternative in each of the following:

A and B are two students. Their chances of solving a problem correctly are 1/3 and 1/4 respectively. If the probability of their making common error is 1/20 and they obtain the same answer, then the probability of their answer to be current is

A. 10/13

B. 13/120

C. 1/40

D. 1/12

Answer :

E1 = Both Solve correctly




E2 = Both Solve incorrectly




A = They get the same result


Using Baye’s Theorem





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