Wednesday, May 27, 2009

Mark is Having a Party

Mark is in a bit of a quandary. He's having a party, but knowing his friends, he's having trouble deciding who he should invite.

If he invites John, he must invite Paul. If he invites Paul, he can't ask Mary. And of course, if he invites Mary, he can't ask Paul. He must invite John or Mary or both. It just wouldn't be a party without one or the other or both of them. But if he invites Mary, he must invite John.

Who can he invite to his party?

51 comments:

  1. Well, watching movies by yourself is like having a party.

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  3. just dont invite john..
    because he started the link..
    if he's not invited then you can invite paul and mary..
    why would u invite john if the party is boring w/o the other two..
    do u really need to have 2 guests only?.
    poor john..
    -this is only a guess though..:P

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  4. John and Paul!! Because they always get drunk and do that funny dance....you know....that funny dance.

    I say invite the gerbil, he doesn't eat much so you'll have all the cake to yourself

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  5. John and Paul. Obviously you can't invite Mary cause she seems to be the trouble maker here! :)

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  6. How about he just invites Mary ;)

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  7. Invite Jeff... I hear that guy's the life of the party.

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  8. Sproglet...the gerbil! I wondered if it would surface again!

    Leave Mary out...women! Always causing trouble

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  9. i say he either invites no one or he invites John + Paul...


    btw good Q...

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  10. In the South, a party is meant to be a hee-hay, knee slapping, good time, not a downer, unless ofcourse it is tea time and then a sense of decorum must prevail. The question is not who Mark MUST ask but who Mark CAN ask. I say, Mark should ask anyone he darned well pleases, that he feels will make excellent party-goers and who will offer interesting conversation and perhaps even present some shocking new tidbits about other guests. However, It appears that Paul is the only feesible answer to the puzzle, because he is the only one Mark CAN invite without excluding or including John or Mary. If he INVITES John that will include Paul and Mary. If he INVITES Mary that will include John. Therefore, Paul is the only one in which Mark CAN ask to attend.

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  11. He needs to invite both John and Mary. You need to round out the party with a little female inteligence.

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  12. john, and then paul by default. sorry, mary!

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  13. Poor Mary, ever since her and Paul broke up she never gets invited anywhere. Looks like he can only invite John and Paul.

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  14. John and Paul. John because he must invite J or M or both. Paul because if he invites J, he must invite P. Not Mary because if he invites P, he can't ask M.

    Of course, he could always allow his guests to invite guests, and John could bring Mary with him!

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  15. Looks like Paul's out to me.
    But if his last name is McCartney, he's welcome for dinner at my place anytime.

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  16. He should invite John and Paul and not Mary. He can't JUST invite Mary because it said if he invited her then he must invite John. If he invited John then he must invite Paul.

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  17. ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

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  18. It doesn't say that if he invites John he has to invite Mary. So go ahead and nvite John and Paul.

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  19. Invite John and Paul.

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  20. He should invite John and Paul. Poor Mary...she can come to my party instead, it's my birthday tomorrow!

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  21. Either just John and Paul, or spread out the party where John is the constant, Mary is there for 1/2, and Paul is there for the other 1/2.

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  22. Invite John. This will automatically invite Paul.

    You need either Mary or John, and seeing as Paul is not an option with Mary, there is no other choice.

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  23. invite me!!!

    *john and mary then

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  24. Invite john and paul and mary. see john and paul are friends, but paul and mary are beefing. so get john to hook up with mary and that way everyone will have a good time.

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  25. He can invite Paul and John

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  26. Invite all of them hehehe its a party,,everyone enjoy

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  27. Its all about the girl,,Its all about Mary, theres something about Mary(hmmmm sound familiar)....

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  28. Invite them all and let the chips fall where they may. It could be fun.

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  29. what is the final correct answer? there seems to be no way both john and mary can be there together...

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  30. just don't invite mary? so paul and john....

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  31. These answers are HILARIOUS. Looks like he has to just invite Paul! Mary seems to be the little party pooper and no one likes her, and John is automatically going to go if Paul goes. So looks like Mary is staying home with a bowl of popcorn and a few chick flicks, and its going to be a night with the boys--no complaints with that idea over here haha ;D

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  32. Sounds like Mark needs to get out more and meet some slightly more interesting people.

    Why doesn't he just advertise his party on Facebook or MySpace and expect lots of people to turn up......that way John, Paul and Mary might just turn up anyway and it's not like it will be his fault if they don't enjoy themselves.

    Failing that, John and Paul seem to be alright, there's just something about Mary that appears to get on their wick.....sounds like a Boy's Night is in order.

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  33. It's John and Paul, coz Mary's creating all this whom-should-I-invite trouble...
    Of course, he could organize a separate party for Mary, that way all four would be happy!

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  34. John and Paul...Let Mary have a merry time on her own ;)

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  35. If you think of this as a logic puzzle, you have two possibilities for each person. That means there are eight possibilities (John and Paul and Mary come; John and Paul come, but not Mary; John comes, but not Paul or Mary, and so on...)

    You could even write out a simple grid:
    John Paul Mary
    True True True
    True True False
    True False True
    True False False
    False True True
    False True False
    False False True
    False False False

    Each of those possibilities (except for one) can be eliminated using the clues above, leaving you with John and Paul coming to the party, but not Mary.


    BTW, Happy Birthday Kira!

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  37. Okay, it's plain logic,

    He said that the party wouldn't be a party without Mary or John, right?
    So if her invites Mary, he'll have to invite John, however, since it said that he can invite either one of them, but the party can't happen with the both of them, he'll just have to invite John because Paul will come with him, and because of that Mary won't come, so he won't have to invite her, and the party will still happen because the both of them - John and Mary - wouldn't be there together.

    Am I right Mike?

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  38. John & Paul.

    Though really Mark should invite everyone and tell them all who he has invited and let them decide for themselves. For example, my FIL just emailed asking us for a yes-or-no response are we coming to the family reunion. Because if yes, he won't come and have us ruin his plans again like last year when he showed up, saw us, turned around and left.

    Wait, this isn't party invitation personal story time?

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  39. Invite all three with the full understanding of who is coming, they'll get over whatever silly argument is causing this problem, just have a bunch of fun stuff to do!

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  40. I'd say skip the party and go to a bar and make new friends.

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  41. hi mike...y not u post some logic puzzles??

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  42. I try to do a little bit of this and a little bit of that. I'm sure I'll do another logic puzzle soon.

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