What single digit yields the exact same result whether you add it to itself or multiply it by itself?
Two
For any positive single digit, 2 + 2 equals 4, and 2 * 2 also equals 4.
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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