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A fair coin is tossed 4 times. what is the probability that at least 2 heads appear
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A fair coin is tossed 4 times. what is the probability that at least 2 heads appear

User Michael Krause
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HHHH TTTT HHHT HHTH HTHH THHH TTTH TTHT THTT HTTT
HHTT HTHT HTTH TTHH THTH THHT

- is the sample space.

Total possible arrangements = 16.
Number with at least 2 heads = 11

Required probability = 11/16


User Thammas
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