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40C12?

And : \(\large ^n C_r = \cfrac{n!}{r! (n-r)!} \)

@Haruhi , can you solve it now?

not really. I've been trying to solve it that way all this time. I'm getting weird results.

Or just use a calculator

What do you get?

Lol you should get 5,586,853,480 check your calculator

type "calculate 40 choose 12" into google

Ahh

it will take
"40 choose 12"
and give the answer

I think we don't have Google in the exam!?

Ok..... still confused. How can a calculator be wrong lol what the hell am I doing

Try:\[\frac{40!}{(12!(40-12)!)} \]

That is wrong all of you I think its 12 times 40 its simple probability i think

No nevermind

Its c

ok... >_>

What is that supposed to mean

weirdos