Question

What is the no. Of ways of dividing 12 pens in groups of 3,4, and 5 pens?

Answer 1

1 st ans:- Everyone will get a one pen

[I am not sure]

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2nd ans:-

1. 1st group is of 3 that's why everyone get 4 pens
2. 2nd group is of 4 that's why everyone gets 3 pens
3. 3rd group is of 5 thats why somebody will not gets pens in the group 5 (adjest with 3pens,4pens,4pens,1pen like this.
4. )