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Mathematics 8 Online
OpenStudy (woahning):

WILL BECOME FAN AND GIVE MEDAL If I have 13 CDs how many combinations of 6 can I do

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

OpenStudy (anonymous):

http://www.wolframalpha.com/input/?i=13+choose+6

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