celinekrugielki celinekrugielki

31-05-2016
Mathematics

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If you flip 3 fair coins, what is the probability that you'll get at least 2 heads?

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VenusRetrograde VenusRetrograde

31-05-2016

Let's go through all of the possible scenarios. H=Heads T=Tails

HHH
HHT
HTT
HTH
THH
THT
TTH
TTT

4 of the 8 possible solutions ends with at least 2 heads.

P(2 heads)=4/8
Simplify
P(2 heads)=1/2 or 50%

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