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OpenStudy (woahning):
WILL BECOME FAN AND GIVE MEDAL If I have 13 CDs how many combinations of 6 can I do
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OpenStudy (agl202):
13times6 is 78!!!
OpenStudy (anonymous):
hmmm
OpenStudy (anonymous):
i think you are looking for \[\binom{13}{6}\] or \[_{13}C_6\] i would use a calculator
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