Exam
Maths Puzzle
Numerical Ability
if nP4=7920 find nC4?
Read Solution (Total 1)
11p4=7920;(by finding factors)
i,e,n=11
nc4==>11c4=11*10*9*8
-----------------
4*3*2*1
110*3=330
so nc4=330
8 years ago
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