Answer: What Comes Next? #137

The answer is D: pink square.

The finished pattern: pink square, pink square, blue square, blue square, pink square, pink square, blue square, blue square, pink square, pink square.
The finished pattern.

The rule

The pattern repeats every 4 things: pink square, pink square, blue square, blue square. 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 = ["pink square", "pink square", "blue square", "blue square"]
for position in range(10):
    print(position + 1, pattern[position % len(pattern)])

When you run it, Python prints:

1 pink square
2 pink square
3 blue square
4 blue square
5 pink square
6 pink square
7 blue square
8 blue square
9 pink square
10 pink square

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