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hi,
In combination , only things matters not their order
whereas in permutation order of things also matters
for eg. if there are four diffrent things named a,b,c, d .
&we have to form groups of three out of them
if we don,t take care of order groups can be a,b,c
a,b,d
b, c, d etc
but we can,t further add a,c,b in this group coz it will be same as a,b,c.
now if we consider the order in which a,b & c are written ,then a,b,c & a,c,b are two different permutations but same combination.Here 6 permutations are possible for each combination in this example,[(abc),(acb),(bac),(bca),(cab),(cba)], but all these are same in terms of der combinations.
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