The probability of passing an exam by A is 0.2 and the same by B is 0.3; What will be the probabilit

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19 Dec 2012 probability

The probability of passing an exam by A is 0.2 and the same by B is 0.3; What will be the probability that only one of them could pass the exam.

OPtion

1) .14
2) .21
3) .24
4) .38
5) .06
6) .56
7) .68
8) .54
9) .76
10) none of these

Solution

required probability = 0.2*0.7 + 0.3*0.8 = 0.14+.24 = 0.38

Correct Option: 4 Best Solution (0)