Question

The set of natural numbers less than 15 and divisible by 3 in roster form is .

• A. $\{3,6,9,12\}$
• B. $\{1,2,6,9,12\}$
• C. $\{1,3,5,12,15\}$
• D. $\{3,6,9,12,15\}$

Answer 1

The correct option is A $\{3,6,9,12\}$

3, 6, 9 and 12 are the natural numbers that are less than 15, and are divisible by 3.
In roster form, the elements of the set are listed within a pair of braces, and are separated by commas.
Thus, the set of natural numbers less than 15 and divisible by 3 in roster form is given by $\{3,6,9,12\}.$