Answer: What Comes Next? #101

The answer is B: green circle.

The finished pattern: green square, green circle, green circle, green square, green circle, green circle, green square, green circle.
The finished pattern.

The rule

The pattern repeats every 3 things: green square, green circle, green circle. Then it starts again from the beginning.

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.

pattern = ["green square", "green circle", "green circle"]
for position in range(8):
    print(position + 1, pattern[position % len(pattern)])

When you run it, Python prints:

1 green square
2 green circle
3 green circle
4 green square
5 green circle
6 green circle
7 green square
8 green circle

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