Puzzles and Riddles  Post your best stumpers!
Please read the Discussion Board Rules before participating in the discussion boards. (#5375515) Re: Coconut Puzzle
Posted by FragileKitty on 15 May 2022 at 7:33AM I must be missing something. If we just consider the 3am event, let: x = the number in the pile y = the number in each pile after dividing them up Thus: 5y + 1 = x After he takes a pile, there are z remaining: z = x  y Because of the 9am event, z must be an even number. We can eliminate x by substituting 5y + 1 for x in the second equation: z = 5y + 1  y Simplifying: z = 5y  y + 1 z = y (5  1) + 1 z = 4y + 1 If z is even, I don't see how y can be a whole number. 4y can never be an odd number, can it?

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