Permutations and combinations are no different except for a change that permutations are selein order ..comb are not
Takke for example you ve got 8 people & you should distribute 6 cookies to them if it is permutation N= total no. of objects and R=the picks here ,6°cookies okay so N!/R!is the way it goes for permutations 8*7=56 done
Then contrarily N!/(N!-K!)*K! So to plug in the values we get 8!/2!*2!=420*8=3360..!!Whoa
Quite a large number to take..isn't it
Okay then that calls for a wrap ..bye .:-)
Saturday, May 19, 2012
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