Question
Fri December 28, 2012 By: Karan

How to find a(superscript)C b(subscript)...What is the formula??

Expert Reply
Fri December 28, 2012
5C2 = 5!/ 2! 3! = 5 x 4 / 2 = 10
 
Since, aCb = a!/ b! (a-b)!
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