The formula for the answer is:
12/6
=2
Note: / means divide
* * * * *
Unfortunately, the above answer is totally wrong. The correct answer is 12C6, the number of combinations of 6 things a time from 12 and this is equal to 12!/[6!*(12-6)!] where n! denotes n*(n-1)*...*3*2*1
So, 12C6 = 12*11*10*9*8*7/(6*5*4*3*2*1) = 924
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