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Algebra
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OpenStudy (anonymous):
4 bananas are to be selected from a group of 7. In how many ways can this be done?
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undeadknight26 (undeadknight26):
I think 28?
OpenStudy (anonymous):
is that probability?
undeadknight26 (undeadknight26):
I think so.
undeadknight26 (undeadknight26):
I forgot how to do it sorry...
OpenStudy (anonymous):
ahh ok. well, i also think it's 28
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OpenStudy (anonymous):
ok thank you :)
OpenStudy (cwrw238):
this is the number of combinations of 4 bananas from 7 which is 7C4 which is 7! ------ 4! (7-4)!
OpenStudy (cwrw238):
4! = 4*3*2*1
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