Question

Determine if the collection is not well defined and therefore not a set.

The collection of whole numbers greater than one trillion
below

Answer 1

Answer: The collection of whole numbers greater than one trillion below is well defined and is a set. It consists of all whole numbers greater than 1 trillion and less than infinity. Although the set may be infinite, it is still well defined and can be defined using set-builder notation as:

1,000,000,000,000 < x < ∞

or using interval notation as:

(1,000,000,000,000, ∞)

Explanation: