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Theoretical Probability

A coin is tos...

Question

A coin is tossed three times. Find the probability that heads and tails will appear alternatively. Give the answer up to 2 decimal places

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Solution

There are two favourable outcomes for this event: THT, HTH.

Since there are total of 8 possible outcomes, the probability of this happening is $\frac{2}{8}$ = 0.25

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