in how many ways can 5 letters be posted in 3 boxes such that each box get atleast 1 letter

Question

in how many ways  can 5 letters be posted in 3 boxes such that each box get atleast 1 letter

harish khanna · Answer

x+y+z=5 no.of non zero solutions are n-1Cr-1.
4C2

Rizen · Answer

Use the  Formula
(n-1) C (r-1)
where n is the number of things to be distributed and r is the number to whom it need to be distributed,

M Deepak · Answer

6 ways?

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