I’m thinking of a number.
If I was to write down all of the numbers from 1 up to and including my number, the number of digits I would write down would be exactly 4 times my number.
What is my number?
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I’m thinking of a number.
If I was to write down all of the numbers from 1 up to and including my number, the number of digits I would write down would be exactly 4 times my number.
What is my number?