Solution to Puzzle #70: Equal Heads

Was a difficult puzzle – I got three correct answers for this. Vivek Shah, Mihir and Aman Singla in that order sent the correct answers – very impressed!

Here is the solution:

Make 2 stacks – one of 10 and the other of 90. 10 will have x heads and 90 will have 10-x heads.

If all the coins of the stack of 10 are reversed, both should have equal number of heads (10-x). However, this will increase the number of coins with head up.

Hope you enjoyed the puzzle!

 

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One Response to Solution to Puzzle #70: Equal Heads

  1. Girish Tutakne says:

    Outstanding!

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