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A problem of mathematics is given to three students whose chances of solving the problem are 1/3, 1/4 and 1/5 respectively. The probability that the question will be solved

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Probability that question will solved means at least one student should be able to solve the question.

Required probability = 1/3 x 1/4 x 1/5 + 1/3 x 1/4 x 4/5 + 1/3 x 3/4 x 1/5+ 2/3 x 1/4 x1/5 + 2/3 x 3/4 x 1/5 + 2/3 x 1/4 x 4/5 + 1/3 x 3/4 x 4/5
= (1+4+3+2+6+8+12)/60
=  36/60
=  3/5 = 0.6

Posted by

Ravindra Pindel

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