sir, I've exchanged my point "25000" with book
"Mathematical Puzzles: A Connoisseur's Collection.
Please sent to my email "mifta*mathits@yahoo.co.id"
because my email "mif*itsmath@yahoo.co.id" error.

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thanks Bob K. for information... regard Bob K..I hope we can discuss more about math

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It's all good. If you see an interesting problem or have a question feel free to use the discussions board to share it with the brilliant community.

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oh.. sorry.. I am confused..

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