Cozy Coins

I have 100 coins in my wallet.

What is the minimum number of coin(s) needed to be placed on a flat floor, to make sure each coin touched exactly three other coins.

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August 30th, 2013 | Category: Mathematical, Money |  Email This Riddle

4 guesses to Cozy Coins

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• anant

  August 31, 2013 at 1:48 AM

  four

• Dude

  August 31, 2013 at 7:12 PM

  Four is correct, Anant.

  You place three coins together in a triangle, and the fourth goes on top.

  Great job. You are today’s winner.

• Brooke

  April 18, 2017 at 2:01 PM

  Oh man Anant, I guessed 3 and then saw your answer and knew I should have changed it to 4. That was my original answer. Who wants to answer a coin riddle I found? I can leave it here: Toss A Coin

• ben

  May 4, 2017 at 12:26 AM

  4