[Answer] Two of these three puzzles are impossible to solve. Which is the only solvable one?

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

The given options are as follows:

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

The correct answer is: Tower of Hanoi

Fact: 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.


Today’s [1-29-2022] “Microsoft Rewards Bing Quiz” has three questions. Each question has only one correct answer and carries one point. The wrong answer does not earn any points. So, select only the correct answers.

All three questions of today’s Bing Quiz are the followings:

  1. What are we seeing in this puzzling image?
  2. ‘👁 ♥ 🧩 🗓’ is an example of what type of puzzle?
  3. Two of these three puzzles are impossible to solve. Which is the only solvable one?

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