The Monkey and The Coconut
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  1. ISO #1

    The Monkey and The Coconut

    Ten people land on a deserted island. There they find lots of coconuts and a monkey. During their first day they gather coconuts and put them all in a community pile. After working all day they decide to sleep and divide them into ten equal piles the next morning.

    That night one castaway wakes up hungry and decides to take his share early. After dividing up the coconuts he finds he is one coconut short of ten equal piles. He also notices the monkey holding one more coconut. So he tries to take the monkey's coconut to have a total evenly divisible by 10. However when he tries to take it the monkey conks him on the head with it and kills him.

    Later another castaway wakes up hungry and decides to take his share early. On the way to the coconuts he finds the body of the first castaway, which pleases him because he will now be entitled to 1/9 of the total pile. After dividing them up into nine piles he is again one coconut short and tries to take the monkey's slightly bloodied coconut. The monkey conks the second man on the head and kills him.

    One by one each of the remaining castaways goes through the same process, until the 10th person to wake up gets the entire pile for himself. What is the smallest number of possible coconuts in the pile, not counting the monkeys?

    Hint
    Spoiler : :
    Cough Math Cough
    Last edited by Fatalis; July 27th, 2012 at 07:45 PM. Reason: Fixed Spoiler Tag

  2. ISO #2

  3. ISO #3
    Yayap
    Guest

    Re: The Monkey and The Coconut

    Quote Originally Posted by Fatalis View Post
    Spoiler not working
    [*spoiler=][/spoiler]

    Spoiler : :
    without the *

  4. ISO #4

  5. ISO #5

    Re: The Monkey and The Coconut

    Quote Originally Posted by Fatalis View Post
    Ten people land on a deserted island. There they find lots of coconuts and a monkey. During their first day they gather coconuts and put them all in a community pile. After working all day they decide to sleep and divide them into ten equal piles the next morning.

    That night one castaway wakes up hungry and decides to take his share early. After dividing up the coconuts he finds he is one coconut short of ten equal piles. He also notices the monkey holding one more coconut. So he tries to take the monkey's coconut to have a total evenly divisible by 10. However when he tries to take it the monkey conks him on the head with it and kills him.

    Later another castaway wakes up hungry and decides to take his share early. On the way to the coconuts he finds the body of the first castaway, which pleases him because he will now be entitled to 1/9 of the total pile. After dividing them up into nine piles he is again one coconut short and tries to take the monkey's slightly bloodied coconut. The monkey conks the second man on the head and kills him.

    One by one each of the remaining castaways goes through the same process, until the 10th person to wake up gets the entire pile for himself. What is the smallest number of possible coconuts in the pile, not counting the monkeys?

    Hint[SPOILER]Cough Math Cough[/SPOILER]
    In order to use spoiler correctly, you must type

    [spoiler=Insert Spoiler Title]Insert what the spoiler is[/spoiler]

    Like this.

    Spoiler : Solution :
    2519 coconuts, not including the monkey's.

  6. ISO #6

    Re: The Monkey and The Coconut

    Quote Originally Posted by Glip View Post
    In order to use spoiler correctly, you must type

    [spoiler=Insert Spoiler Title]Insert what the spoiler is[/spoiler]


    Spoiler : Solution :
    2519 coconuts, not including the monkey's.
    Like this.
    Wow.. and less than 15 minutes ( it took me an hour )
    Can't tell if google or math genius
    Anyway, GJ!

  7. ISO #7
    Yayap
    Guest

    Re: The Monkey and The Coconut

    2519
    is your answer

    edit: damn... someone beat me to it

  8. ISO #8

  9. ISO #9
    Yayap
    Guest

    Re: The Monkey and The Coconut

    fastest way to figure it out was start at multiples of 10 and 9 = 90 is the lowest, then move on to multiples of 90 and 8 = 360 is the lowest, then move on to multiples of 360 and 7 = 2520 is the lowest which also turns out to be a multiple of 6, 5, 4, 3, 2 and 1... subtract 1 for the monkey and you have your answer

  10. ISO #10

 

 

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