Sagot :
Answer:
A={e,e,i,n,o,p,r,s,s,x}
Step-by-step explanation:
Let A be the set of distinct letters in the word "expression"
A={e,x,p,r,s,i,o,n}
Step-by-step explanation:
The elements are inside the braces{} and each elements are separated by comma.
Each distinct letter should be listed once.