A coin is tossed 5 times What is the probability that head appears an odd number of times ........

Quantitative Aptitude ( CCS) Probability

A coin is tossed 5 times. What is the probability that head appears an odd number of times?

1/2

1/3

1/5

1/7

The possible outcomes are as follows :

5H, 5T, (H, 4T), (T, 4H), (2H, 3T) (3H, 2T), i.e. 6 outcomes in all.

Therefore the probability that head appears an odd number of times = 3/6 =1/2

(In only three outcomes out of the six outcomes, head appears an odd number of times).

Hence, option 1 is the correct answer.

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