True or false: sets and relations

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   In roster form the order of the elements does not matter.

2. Statement is true

   Yes

   Statement

   In set-builder form the elements share one common property.

3. Statement is true

   No

   Statement

   An element is written twice in roster form if it occurs twice.

4. Statement is true

   Yes

   Statement

   A relation is a subset of a cartesian product.

Instructions

Decide whether each statement is true or false.

Explanation