Chapter P - Section P.1 - Algebraic Expressions, Mathematical Models, and Real Numbers - Exercise Set - Page 19: 140

The union of two sets A and B, is a new set, let's call it C, which contains every element of A and B, without duplicates.

The union of two sets A and B, is a new set, let's call it C, which contains every element of A and B, without duplicates. Example: Set A: {1,2,3} Set B: {2,3,4} Set C: {1,2,3,4}