Thread: riddle riddle

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  1. #21
    Last edited by Grinder; 2010-12-21 at 01:18 PM.
    Alexander Anderson: You monster.
    Alucard: I get that a lot.

  2. #22
    100% cuz they already have or 1%/90% varying % depending on wheter you use condom or not next time

    ---------- Post added 2010-12-21 at 01:03 PM ----------

    Quote Originally Posted by Ajtbagger View Post
    make it understandable.

    im not 100% sure what you mean.

    assuming both children are boys 0% cause they already are brothers.
    if a riddle is understandable,where is the riddle?
    Yes, I am an Horde fanboy
    Yes, I am an Alliance fanboy
    No, I'm not gonna miss 50% of the game for some stupid ridiculous faction fight

  3. #23

  4. #24
    50%. If you have a son, then the other is 50/50 chance of being a boy, and therefore a brother.

  5. #25
    We know:
    I have two children
    one of them is my son(boy)

    how big is the chance that my son has a brother? not that hard right? |_|

    like 1/8 (no thats not the solution)
    Last edited by Grinder; 2010-12-21 at 01:11 PM.
    Alexander Anderson: You monster.
    Alucard: I get that a lot.

  6. #26
    Can't know.
    there may be diffrent mothers, therefore they're not ''fully'' brothers.
    Haha, then you got a nice GM.* Once had a guildy who's ZG snake "TrouserSnake" was renamed (by the GM) to Bob.* Since this was way back in Vanilla, we all laughed at him and his snake that got "Bobbed".

  7. #27
    Quote Originally Posted by Chippr View Post
    Can't know.
    there may be diffrent mothers, therefore they're not ''fully'' brothers.
    it's the same mother =)
    Alexander Anderson: You monster.
    Alucard: I get that a lot.

  8. #28
    Huibert-Jan
    Guest
    Quote Originally Posted by Grinder View Post
    I have two children

    How big is my sons chance to have a brother?

    make a guess!
    There are 4 possible gender combinations of 2 siblings:
    BG, BB, GB and GG

    Since we only know 1 is a son, but not whether the first or second sibling is a son we're left with 3 possible combinations:
    BG, BB and GB.

    Subtract 3B's and we're left with GGB. I'd say 1/3rd chance of your son having a brother.

  9. #29
    High Overlord
    Join Date
    Dec 2010
    Location
    teh forumz
    Posts
    106
    He has a sister so 0% chance?
    85 Mage - Neptulon EU

  10. #30
    Quote Originally Posted by Grinder View Post
    We know:
    I have two children
    one of them is my son(boy)

    how big is the chance that my son has a brother? not that hard right? |_|

    like 1/8 (no thats not the solution)
    the other might or might not be a brother of his, it might also be a girl.

    so I'd say 25%
    Yes, I am an Horde fanboy
    Yes, I am an Alliance fanboy
    No, I'm not gonna miss 50% of the game for some stupid ridiculous faction fight

  11. #31

  12. #32
    Quote Originally Posted by Huibert-Jan View Post
    There are 4 possible gender combinations of 2 siblings:
    BG, BB, GB and GG

    Since we only know 1 is a son, but not whether the first or second sibling is a son we're left with 3 possible combinations:
    BG, BB and GB.

    Subtract 3B's and we're left with GGB. I'd say 1/3rd chance of your son having a brother.
    You solved the riddle!

    It's as he says, its a 1/3 chance


    wanna go for another one? yay
    Alexander Anderson: You monster.
    Alucard: I get that a lot.

  13. #33
    That's really not a riddle unless i'm misunderstanding it.
    It depends as you said sons which could lead us to mean it's plural and your referring to both children (100%), or it could mean possessive and your just referring to one child in which case the answer is either 0% or 100% depending on the sex of the other child which we have no way of knowing.

  14. #34
    Here's a lil one for the new ones

    Peters Mother has three children: Tick Trick and... ?

    make a guess
    Alexander Anderson: You monster.
    Alucard: I get that a lot.

  15. #35
    Peter.

    The mother has Peter, Tick and Trick as her sons.

  16. #36
    Quote Originally Posted by Huibert-Jan View Post
    There are 4 possible gender combinations of 2 siblings:
    BG, BB, GB and GG

    Since we only know 1 is a son, but not whether the first or second sibling is a son we're left with 3 possible combinations:
    BG, BB and GB.

    Subtract 3B's and we're left with GGB. I'd say 1/3rd chance of your son having a brother.
    Thats totally wrong. You have to pay attention to which sibling you are talking about, you can't just switch them around in the combination. BG is not the same as GB because its a different kid. If we know the first child is a boy then GB isn't a possible combination and is ruled out.

    Given our combinations of BG, BB, GB, and GG if we know one slot is a B then we eliminate all combinations where that isn't the case; if its the first slot then BG and BB remain. If its the second, BB and GB remain. GG isn't a possibility, and one of the B+G combinations is eliminated.

    The thing is, we can't know the probability of the second child being a boy or a girl from that alone. Just because we have assessed that there are two options doesn't mean that they are equally likely. Simply due to population trends, it is slightly more likely that the other child is a girl. Not much though, something like 52% preference.

  17. #37
    Tickthokk
    Guest
    Quote Originally Posted by Grinder View Post
    You solved the riddle!

    It's as he says, its a 1/3 chance
    This is false. Take for instance, flipping a quarter. You can have HT, TT, HH, TH. However, the outcome of the second flip has NOTHING to do with the outcome of the first flip. Both are 50/50 (ignoring genetic pre-disposition towards a gender).

  18. #38
    No, thats wrong Grinder. You stink at probability.

  19. #39
    Peters Mother has three children: Tick Trick and... ?

    Peter

  20. #40
    Quote Originally Posted by Phage0070 View Post
    No, thats wrong Grinder. You stink at probability.
    Then tell me your math, ill tell you mine if you want but i dont want to hurt your ego =)
    Alexander Anderson: You monster.
    Alucard: I get that a lot.

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