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0 votes
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in Mathematics by (72.7k points)

A fair coin is tossed repeatedly. If tail appears on first four tosses, then the probability of head appearing on fifth toss equals

(a) 1/2

(b) 1/32

(c) 31/32

(d) 1/5

1 Answer

+1 vote
by (69.9k points)
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Best answer

The correct option is (a) 1/2

Explanation:

The event that the fifth toss results in a head is independent of the event that the first lour tosses result in tails. 

.'. Probability of the required event = 1/ 2

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