Answer: What Comes Next? #348

The answer is D: 45.

The rule

Add 6 each time.

The pattern as Python code

Here is a tiny Python program that follows the same rule. Type it into IDLE and run it to print the whole pattern, including the answer.

number = 9
for step in range(7):
    print(number)
    number = number + 6

When you run it, Python prints:

9
15
21
27
33
39
45