ENGINEERING MATHEMATICS

Question

The number of multi sets of size $4$ are possible with the elements of the set $S= \{1,2,3,4,5,6\}$ is ________ .

Answer 1

Multiset can contain duplicate elements, therefor for each position (total 4 positions) we have 6 choices.
Therefore total number should be 6*6*6*6 = 6⁴