Answer: These math riddles aren’t easy to solve! The lowest possible numbers for the houses are 19 and 91. The difference is 72. Inti St Clair/Getty Images. Hotel stay.

Math Riddles help you to test your calculation speed, IQ level, analytical abilities, and expand your knowledge of math concepts. Test your brain power with these tricky math puzzles for ...

Math Riddles: Find out how brilliant you are. Only 1% of people with a high IQ can find the missing numbers in these tricky logic math puzzles in 20 seconds each.

Like some of the hardest math puzzles and math riddles, these puzzles can get very complex. If you look for them online, ... RELATED: Printable Sudoku Puzzles. What is a logic puzzle?