Write the set below in roster form and in set-builder notation. P is the set of natural numbers that are less than 4.

Question

Express the set P in roster form.
p = _ (Use ascending order.)

Answer 1

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

P = {1, 2, 3}

In set-builder notation, the set P would be written as:

P = {x | x is a natural number and x < 4}