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OpenStudy (anonymous):
Ray tosses a coin 15 times. How many different sequences of tosses could result in 4 heads and 11tails? Ray tosses a coin 15 times. How many different sequences of tosses could result in 4 heads and 11tails? @Mathematics
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OpenStudy (anonymous):
make a tree diagram and count how many sequences
OpenStudy (anonymous):
I don't know how
OpenStudy (anonymous):
Use nCr
OpenStudy (anonymous):
|dw:1320810643965:dw| until you do it 15 times
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