Three unbiased coins are tossed once. Find the probability of getting (i) exactly 2 tails (ii) exactly one tail (iii) at most 2

Three unbiased coins are tossed once. Find the probability of getting
(i) exactly 2 tails (ii) exactly one tail (iii) at most 2 tails
(iv) at least 2 tails (v) at most 2 tails or at least 2 heads

Three unbiased coins are tossed once. Find the probability of getting (i) exactly 2 tails (ii) exactly one tail (iii) at most 2 tails (iv) at least 2

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