Write the set below in roster form and in​ set-builder notation.

P is the set of natural numbers that are less than 9.

Roster form: P = {1, 2, 3, 4, 5, 6, 7, 8}

Set-builder notation: P = {x | x is a natural number and x < 9 }

To write the set P, which consists of natural numbers less than 9, in roster form, we list all the elements of the set:

P = {1, 2, 3, 4, 5, 6, 7, 8}

In set-builder notation, we describe the set using a variable, a colon, and the condition that the variable must satisfy:

P = {x | x is a natural number and x < 9}

In roster form, the set P can be written as:

P = {1, 2, 3, 4, 5, 6, 7, 8}

In set-builder notation, the set P can be written as:
P = {x | x is a natural number and x < 9}