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Penny Problem (Posted on 2003-10-14) Difficulty: 3 of 5
You are blindfolded before a table. On the table are a very large number of pennies. You are told 128 of the pennies are heads up and the rest are tails up.

How can you create two subgroups of pennies, each with the same number of heads facing up?

See The Solution Submitted by Ravi Raja    
Rating: 3.7500 (16 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Clarification: | Comment 7 of 19 |
What you need to do is subdivide ALL of the pennies into two groups, (and do other stuff), then say "I'm done", which at that point each pile will contain the same number of heads.

I don't think there is anything wrong with SK's solution... :)
  Posted by Gamer on 2003-10-14 17:01:04
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