Answer:
9. Set of first three months of a year.
10. Set of alphabets occurring in the word “Vietnam”.
11. Set of natural numbers between 50 and 60 exclusively.
12. Set of natural numbers greater than 16 and less than 100.
13. Set of integers which are multiples of 4 and is less than 32.
14. Set of integers which are multiples of 5.
Note: 11 & 12 can be written interchangeably.
Step-by-step explanation:
I hope this helps you :)
-KeairaDickson