[1-29-2022] Microsoft Rewards Bing Homepage Quiz Question: **Two of these three puzzles are impossible to solve. Which is the only solvable one?**

The given options are:

- Three-cups problem
- Seven Bridges of Königsberg
- Tower of Hanoi

Correct Answer: **Tower of Hanoi**

**Information:** *Unlike the Seven Bridges problem proved impossible by Leonhard Euler, or the unwinnable ‘three-cups challenge’ that’s made its way into many a magic act, the Tower of Hanoi is solvable. But depending on how many disks are included in the puzzle, it can take an impossibly long time. A version of the game with three disks can be solved easily in seven moves—but with 64 disks, it would take more than 500 billion years at a rate of one move per second.*

All three questions from today’s Bing Quiz are below. You can find their answers by visiting those pages.