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OpenStudy (anonymous):
A fair coin is flipped three times. What is the probability of getting tails at least twice? Write your answer as a simplified fraction
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OpenStudy (anonymous):
at least twice means twice or three times. calculate them and add. in this case no formula is needed, you can count. hhh hht hth thh tth tht htt ttt count the ones with two or three tails, divide by 8
OpenStudy (anonymous):
is it 4/8
OpenStudy (anonymous):
yes your teacher would probably prefer 1/2, but you are right
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