another way of evaluating this is by noting that C(12,10) = C(12.2) and you write
C(12,10) = 12*11
----
2*1
this follows from the rule quoted by ParthKohli
Parth (parthkohli):
^ Where is the LaTeX lol
OpenStudy (anonymous):
Thanks guys!
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OpenStudy (cwrw238):
yea - i know - thanx for the tuition - i'll have to practice it - but i'm too tired now its late here in uk and i'm about to turn in
Parth (parthkohli):
lol xP
OpenStudy (anonymous):
Wait, for cwrw's method I got 66. But for parth I got 66...
OpenStudy (anonymous):
*132
Parth (parthkohli):
There's certainly a mistake you've done :/
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OpenStudy (anonymous):
So the answer is 66?
Parth (parthkohli):
The formula that I said leads to cwrw's statement.
It's 66 in both. =))
OpenStudy (anonymous):
Oh woops, I calculated yours wrong :/ Thanks for the clear up.