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
right to left A
right to left B
open curly brackets space 2 space close curly brackets
open curly brackets 1 space comma space 2 space comma space 3 space comma space 4 space comma space 5 close curly brackets

Answer 1

{1, 2, 3, 4, 5}