# Riddle #23

What is black when it is clean and white when it is dirty?

**Hint:** Teachers write on it.

    Show answer

**A chalkboard.**

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## Frequently asked questions

### What is the answer to this riddle?

The answer is A chalkboard. Teachers write on it.

### Where can I find more riddles for kids?

Browse all 100 riddles on Toolantern for more clean, kid-safe brain teasers with hints and hidden answers.