Multiple choice general knowledge

If it took eight men ten hours to build a wall, how long would it take four men to build it?

  1. 20

  2. Its possible

  3. 10

  4. No time at all it is already built.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is a classic riddle that plays on the assumption that the wall needs to be built again. If eight men already built the wall in ten hours, the wall exists and doesn't need to be rebuilt. The trick is recognizing that the work is already complete. Options suggesting 20, 10, or any positive time assume the work must be repeated.

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