Four coins are tossed, find the probability of getting atleast 2 tails
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when four coins are tossed the outcomes can be (hhhh) (hhht) (hhth) (hthh) (thhh) (htth) (thht) (hhtt) (htht) (thth) (tthh) (httt) (thtt) (ttht) (ttth) (tttt)
total outcomes = 16
required outcomes = 11
probability = required outcomes/total outcomes
= 11/16
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