Question

In how many ways 5 different subjects can be distributed in 6 periods

Answer 1

let each subject be 1,2 ,3,4,5.
then 1st way
1st period - 1
2nd period - 2
3rd period - 3
4-4
5-5
6-1
2nd way
1,2,3,4,5, as usual 6- 2
3rd way
12345 as usual 6-3
4th way
1,2,3,4,5, as usual 6-4
5th way
1,2,3,4,5, as usual 6-5
an so on it os a never ending series
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