Question

List all the elements of the following set. Use set notation and the listing method to describe the set.

{15, 16, 17,....,23}

{15, 16, 17, ?, 23}

Answer 1

9514 1404 393

Answer:

{x ∈ ℕ : 15 ≤ x ≤ 23}

{15, 16, 17, 18, 19, 20, 21, 22, 23}

Explanation:

This "set-builder notation" tells you the set consists of natural numbers between 15 and 23, inclusive. In this notation, the colon (:) and vertical bar (|) are interchangeable.

{x ∈ ℕ : 15 ≤ x ≤ 23}

__

This "roster form" lists all of the elements of the set, the integers between 15 and 23, inclusive.

{15, 16, 17, 18, 19, 20, 21, 22, 23}