Question

A{123} B{12345} A union B ????​

Answer 1

AUB={123,12345}
If question contains commas between numbers like 1,2,3 then it may change........
In question contains,one element in A set and one element in B set.........

Answer 2

Step-by-step explanation:

SOLN:

GIVEN: A =(123)

B =(12345)

AUB =(12345)