nC18=nC12 then value of n
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n = 12 + 18 = 30
nC3 = 30! / (30-3)! 3!
= (30 x 29 x 28 x 27!) / 27! 3 x 2
= 4060
nC3 = 30! / (30-3)! 3!
= (30 x 29 x 28 x 27!) / 27! 3 x 2
= 4060
Anupdddas:
option a=18 b=12 c=6 d=30
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