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Writing Digits

Lee was writing all the counting numbers from 1 to 20. She stopped for a rest after writing seventeen digits. What was the last number she wrote?

Number Detective

Follow the clues to find the mystery number.


Find out about palindromic numbers by reading this article.

What Number?

Age 5 to 7 Short
Challenge Level

I am less than 25.

My ones digit is twice my tens digit.

My digits add up to an even number.

What am I?