Question

What kind of a number pattern is this: 9, 12, 15, 18…

• A. Odd number pattern
• B. Even number pattern
• C. Prime number pattern
• D. Composite number pattern

Answer 1

The correct option is D

Composite number pattern

The given sequence is 9,12,15,18….

Now,

$3\times 3=9$

$3\times 4=12$

$3\times 5=15$

$3\times 6=18$

We observe that each term in the sequence is a multiple of 3.

The above sequence has both odd and even numbers so it is neither an odd number pattern nor an even number pattern.

Also, none of the terms is a prime number, so it is not a prime number sequence.

Hence, the given sequence of numbers is a composite number pattern.