Answer: What Comes Next? #235

The answer is B: 35.

The rule

Take away 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 = 71
for step in range(7):
    print(number)
    number = number - 6

When you run it, Python prints:

71
65
59
53
47
41
35