A fair coin is tossed twice in succession. The set of equally likely outcomes is {HH, HT, TH, TT}. What is the probability of getting exactly two tails?

Question

Tori

Mathematics

8 December, 07:59

A fair coin is tossed twice in succession. The set of equally likely outcomes is {HH, HT, TH, TT}. What is the probability of getting exactly two tails?

+4

Answers (1)

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Howe · Answer 1

The probability is 1/4

This is because:

Probability of first tails = 1/2

Probability of second tails = 1/2

Probability of first AND second tails = 1/2 * 1/2

= 1/4

This is also visible in the set of outcomes