Question

اذا كانت  A equals open curly brackets 1 space comma space 2 space comma space 3 close curly brackets space space space space comma space space space space B equals open curly brackets 2 space comma space 4 space comma space 5 close curly brackets  فان    A union B equals

Answer 1

If A = {1, 2, 3} and B = {2, 4, 5}, then the union of A and B (A ∪ B) is the set that contains all the unique elements present in either set A, set B, or in both A and B.
A ∪ B = {1, 2, 3, 4, 5}
Therefore, A ∪ B = {1, 2, 3, 4, 5}.