White when dirty

I am white when I am dirty, and black when I am clean. What am I?




Similar Riddles

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

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I travel all around the world but always stay in the corner. What am I?

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I know a number which is spelt in alphabetical order.
Do you?

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What can go up a chimney down, but can’t go down a chimney up?

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How many letters are in the alphabet?

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What two things can you never eat for breakfast?

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Why did the Girl throw the butter out of the window?

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You can see three almost identical images below. Can you spot the odd one out from them?


Find the Odd One Out

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A California farmer owns a beautiful pear tree. He supplies the fruit to a nearby grocery store. The store owner calls the farmer to see how much fruit is available for him to buy. The farmer knows the main trunk has 24 branches. Each branch has exactly 12 boughs and each bough has exactly 6 twigs. Since each twig bears one piece of fruit, how many plums will the farmer be able to deliver?

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What does below Rebus say?

XLR8

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Gambling

In Canada, a mathematical puzzle must be solved in order to win the lottery to classify it as a “game of skill” not gambling.