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Question 146

If 3 coins are tossed, then the probability of getting at least 2 heads is

Solution

when the 3 cion are tossed the total number of cases are = $$2^3$$ = 8

and at least two heads are there in the following = HHT, HTH, THH, HHH = 4

then the probility of getting at least two heads = number of favourable cases \ total number of cases

then the probility of getting at least two heads = 4\8 = 1\2 Answer

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