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30. Three coins are tossed together. Find the probability 49of getting at least two heads.k.3(C) 긁 (D)58g-(A)(B) 8

Answer»

Three coins are tossed so number of outcomes=2*2*2=8We are required to get probability if getting atleast two heads.Favourable possibilities areHHH,HHT,HTH,THH=4 in numbers.Hence probability of getting atleast two heads=4/8=1/2

hence probability of getting at least two head=4/8=1/2



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