If you write out all the whole numbers from 1 to 100, how many of those numbers contain at least one digit zero?
10 numbers
The numbers containing the digit zero are 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100. That makes a total of 10 numbers.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Easy. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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