100 Houses and door numbers puzzle

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100 Houses and door numbers puzzle

A painter is given the task to paint door numbers on 100 houses that have just been built.

He has to paint the numbers 1, 2, 3....and so on until the 100th house where he paints 100 on it.

How many times will he paint the number 9 ?

Click here for Answer

The number 9 is painted 20 times !

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