Answer: The fraction of set of twins=

The fraction of sets of triplets=

The fraction of set of quadruplets=

Explanation:
Given: The number of set of twins=5
The number sets of triplets = 2
The number of set of quadruplets=1
⇒ The total number of multiple birth students =5+2+1=8
∴ The fraction of set of twins=

∴ The fraction of sets of triplets=

∴ The fraction of set of quadruplets=
