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4 : Each coin toss multiplies the generated outcome by two. The outcome for two tosses can be Heads (H) Tails (T), H H, T T or T H. As such, with three tosses the outcome can be H H H, H H T, H T H, T H H, T T H, T T T, T H T, H T T.

We can define the number of outcomes as 2^n, where n is the amount of tosses.

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Q: What is the number of possible outcomes when a coin is tossed twice?
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