What will be the probability that k1*k2*k3 is an even number, if k1, k2, k3 are 3 positive integers

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20 Dec 2011 probability

What will be the probability that k1*k2*k3 is an even number, if k1, k2, k3 are 3 positive integers taken randomly.

OPtion

1) 1/8
2) 1/4
3) 3/8
4) 1/2
5) 5/8
6) 3/4
7) 7/8
8) 1
9) 1/3
10) none of these

Solution

if you take all odd numbers, then product will be odd. In all other 7 cases, it will be even so probability = 7/8

Correct Option: 7 Best Solution (0)