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zorro
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Homework Statement
In how many ways can 3 balls of different colours be put in 4 glass cylinders of equal width such that any glass cylinder may have either 0,1,2 or 3 balls?
The Attempt at a Solution
Using the formula for no. of ways for distribution of n distinct things into r different groups when empty groups are allowed-
n+r-1Cr-1 = 6C2 = 15
Now the balls can be arranged among themselves in 3! ways
there fore 15 x 3! =90
The answer is wrong.
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