Answer: What Comes Next? #411

The answer is A: 2916.

The finished pattern: 4, 12, 36, 108, 324, 972, 2916.
The finished pattern.

The rule

Multiply by 3 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 = 4
for step in range(7):
    print(number)
    number = number * 3

When you run it, Python prints:

4
12
36
108
324
972
2916

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