Two coins are tossed simultabeously. Find the probability of getting:
(i) at least one Tail
(ii) atmost two Head
(iii) one Head

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Solution

Total outcomes when two coins are tossed $= H H, H T, T H, T T$
(i) Favorable $= H T, T T, T H \Rightarrow P = \frac{3}{4}$
(ii) Favorable $= H H, H T, T H, T T \Rightarrow P = \frac{4}{4} = 1$
(iii) Favorable $= H T, T H \Rightarrow P = \frac{2}{4} = \frac{1}{2}$

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