The combinations with repetition are allowed is equal to 28.
Here we have N=7 r=2
We have to determine the combination of repetition
What is the combination?
A combination is a selection of items from a set that has distinct members, such that the order of selection does not matter.
The combinations with repetition are allowed if n = 7 and r = 2
So 7x2=14
7x3=21
7x4=28
Therefore the combinations with repetition are allowed is equal to 28.
To learn more about the combination visit:
https://brainly.com/question/26153631
#SPJ2
