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Question
A coin is tossed 8 times, how many different sequences of heads and tails are possible?
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Solution
A coin on tossing has two outcomes.
Tossing a coin once number of outcomes = 2
∴ Tossing a coin 8 times number of outcomes = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 = 28
∴ The different sequences of heads and tails are 28
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