Two unbiased coins are tossed. What is probability of getting at most one tail ?

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Two unbiased coins are tossed. What is probability of getting at most one tail ?

Options:

A . $$\frac{{1}}{{2}}$$

B . $$\frac{{2}}{{3}}$$

C . $$\frac{{3}}{{2}}$$

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

Answer: Option D

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