Three unbiased coins are tossed. What is the probability of getting at most two

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Three unbiased coins are tossed. What is the probability of getting at most two heads?

Options:

A . $$\frac{3}{4}$$

B . $$\frac{1}{4}$$

C . $$\frac{3}{8}$$

D . $$\frac{7}{8}$$

Answer: Option D

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