What positive whole number, when multiplied by itself, gives the exact same result as when it is added to itself?
Two
2 multiplied by 2 is 4, and 2 plus 2 is 4. No other positive whole number shares this property.
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.
More math riddles
Ava has 19 leprechauns and Lily has 8. How many more leprechauns does Ava have?
How many total straight cuts with a knife are required to slice a cube of cheese into 27 identical smaller cubes?
A snail at the bottom of a 10-foot well climbs up 3 feet every day, but slips down 2 feet every night. How many days will it take the snail to reach the top?
If you flip me upside down, my value decreases by three. I am a single-digit number higher than five. What number am I?
Ana makes 5 rows of 2 boots and adds 6 more at the end. How many boots are there in all?
I am an even number composed of two digits. Neither of my digits is zero. The product of my digits is 12, and my tens digit is greater than my units digit. What number am I?

