My digits add up to eight. I am a multiple of eleven, and I am greater than fifty. What number am I?
71
7 plus 1 equals 8. 71 is greater than 50, and 71 is not a multiple of 11. Wait! 7 * 11 = 77 (7+7=14), 6 * 11 = 66 (6+6=12), 8 * 11 = 88 (8+8=16). Let's fix this: My digits add up to 14. I am a multiple of eleven, and I am greater than fifty. (Answer: 77). Let's use 77.
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
I am an odd three-digit number. All three of my digits are different. My tens digit is the sum of my hundreds and units digits. The sum of all my digits is 12. What number am I?
Lily has 18 green hats and Omar has 8. How many more green hats does Lily have?
Eli has 7 carrots and finds 8 more. How many carrots does Eli have now?
A square room has 1 cat sitting in each of its 4 corners. Each cat sees 3 cats sitting in front of it. How many total cats are in the room?
I am a two-digit number. My tens digit is double my units digit. If you reverse my digits, the new number is 36 less than me. What number am I?
I am a two-digit prime number less than 30. Dividing me by 4 leaves a remainder of 3. Adding 2 to me turns me into a multiple of 5. What number am I?