A three-digit number has a tens digit that is five greater than its ones digit, and a hundreds digit that is eight less than its tens digit. What is the number?
194
Let the ones digit be d. The tens digit is d + 5. The hundreds digit is (d + 5) - 8 = d - 3. For the hundreds digit to be a non-zero single digit and the tens digit to not exceed 9, d must equal 4. Thus, hundreds = 1, tens = 9, and ones = 4, forming 194.
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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