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Mathematics 8 Online
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

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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