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Combination formula
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Combination Formula
MeraSkill.com Online preparation for CA CPT,CS & CMA Foundation exam
2. MeraSkill.com Online preparation for CA CPT,CS & CMA Foundation exam
Combination Formula
n!
nCr or C[n,r] = -----------
n-r!r!
n refers to total available items
r refers to items to be selected
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Hinweis der Redaktion
The way formula is derived.
http://mathforum.org/dr.math/faq/faq.comb.perm.html
Selection is always less than arrangment