Answer: What Comes Next? #340

The answer is A: 17.

The finished pattern: 41, 37, 33, 29, 25, 21, 17.
The finished pattern.

The rule

Take away 4 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 = 41
for step in range(7):
    print(number)
    number = number - 4

When you run it, Python prints:

41
37
33
29
25
21
17

Pixel says: Try changing a number in the code and run it again. Can you make the pattern go on for 20 steps? Meow!