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The probability of having the combination of one head and one tail when flipping two coins is _____.

Sagot :

50%
Assuming that the coins are fair and each have a 50% chance of head or tails there are 4 equally likely combinations that can occur: first coin is a head and second is a head, first a head and second a tail, first a tail and second a head, first a tail and second a tail. Each is as likely, 25%. The four choices are HH, HT, TH, TT, and you can see that two of them (HT, TH) fulfill having one head and one tail, giving you 25% +25% making is 50%.