I am a four-digit number. My thousands digit is 3, and my units digit is 8. The middle two digits are equal to each other, and the sum of all my digits is 20. What number am I?
2556
Let the number be 2xx6. The sum of the digits is 2 + x + x + 6 = 18, which means 8 + 2x = 18, so 2x = 10 and x = 5. The number is 2556.
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: Medium. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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