I am black when I am clean and white when I am dirty?

I am black when I am clean and white when I am dirty?

Other Difficult Riddles

When it comes in, From sea to shore, Twenty paces you'll see, No less, no more.

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What's a place you have left but didn't enter?

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Halo of water, tongue of wood. Skin of stone, long I've stood. My fingers short reach to the sky. Inside my heart men live and die.

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What word is a plural, but when you add an "S" to the end, it becomes singular?

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What is round as a dishpan, deep as a tub, and still the oceans couldn't fill it up?

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Riddle of the Day

Mar 17, 2026

If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?

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