Can anyone derive the following:

'n' identical things are distributed among 'r' persons. The formula for this is C(n-r+1,r-1). How do you derive this ?

Thanks

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- August 31st 2011, 07:26 PMighoshPermutation and Combination
Can anyone derive the following:

'n' identical things are distributed among 'r' persons. The formula for this is C(n-r+1,r-1). How do you derive this ?

Thanks - August 31st 2011, 07:41 PMTKHunnyRe: Permutation and Combination
You start small, derive a conjecture, attempt to prove your conjecture, expand your small start, improve your theory, and on and on and on...

It's called INVESTIGATION! - August 31st 2011, 09:44 PMmr fantasticRe: Permutation and Combination