Jump to content


Welcome to BrainDen.com - Brain Teasers Forum

Welcome to BrainDen.com - Brain Teasers Forum. Like most online communities you must register to post in our community, but don't worry this is a simple free process. To be a part of BrainDen Forums you may create a new account or sign in if you already have an account.
As a member you could start new topics, reply to others, subscribe to topics/forums to get automatic updates, get your own profile and make new friends.

Of course, you can also enjoy our collection of amazing optical illusions and cool math games.

If you like our site, you may support us by simply clicking Google "+1" or Facebook "Like" buttons at the top.
If you have a website, we would appreciate a little link to BrainDen.

Thanks and enjoy the Den :-)
Guest Message by DevFuse
 

Photo
- - - - -

four of a kind


Best Answer superprismatic, 23 March 2013 - 04:49 PM

Spoiler for my answer is

Go to the full post


  • Please log in to reply
10 replies to this topic

#1 BMAD

BMAD

    Senior Member

  • Members
  • PipPipPipPip
  • 1679 posts
  • Gender:Female

Posted 23 March 2013 - 06:25 AM

In five decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?


  • 0

#2 superprismatic

superprismatic

    Not just Prismatic

  • Moderator
  • PipPipPipPip
  • 1281 posts
  • Gender:Male

Posted 23 March 2013 - 04:49 PM   Best Answer

Spoiler for my answer is


  • 0

#3 Prime

Prime

    Senior Member

  • Members
  • PipPipPipPip
  • 872 posts
  • Gender:Male
  • Location:Illinois, US

Posted 23 March 2013 - 07:26 PM

Assuming 52-deck card (no Jokers):

Spoiler for the answer

 


  • 0

Past prime, actually.


#4 Prime

Prime

    Senior Member

  • Members
  • PipPipPipPip
  • 872 posts
  • Gender:Male
  • Location:Illinois, US

Posted 24 March 2013 - 12:57 AM

Spoiler for proper four of a kind


  • 0

Past prime, actually.


#5 BMAD

BMAD

    Senior Member

  • Members
  • PipPipPipPip
  • 1679 posts
  • Gender:Female

Posted 25 March 2013 - 02:34 AM

Assume that a four of a kind is defined as only needing to match the numeric (or letter?) value or in other words that suits do not matter.


  • 0

#6 Prime

Prime

    Senior Member

  • Members
  • PipPipPipPip
  • 872 posts
  • Gender:Male
  • Location:Illinois, US

Posted 25 March 2013 - 04:07 AM

Assume that a four of a kind is defined as only needing to match the numeric (or letter?) value or in other words that suits do not matter.

In that case, like Sp said. And the number of decks does not matter.


  • 0

Past prime, actually.


#7 BMAD

BMAD

    Senior Member

  • Members
  • PipPipPipPip
  • 1679 posts
  • Gender:Female

Posted 25 March 2013 - 04:36 AM

Assume that a four of a kind is defined as only needing to match the numeric (or letter?) value or in other words that suits do not matter.

In that case, like Sp said. And the number of decks does not matter.

well this is embarrassing but for some reason i am getting a higher number, what am i missing?


  • 0

#8 ThunderCloud

ThunderCloud

    Advanced Member

  • Members
  • PipPipPip
  • 102 posts
  • Gender:Male
  • Location:New England

Posted 25 March 2013 - 04:47 AM

 


 


Assume that a four of a kind is defined as only needing to match the numeric (or letter?) value or in other words that suits do not matter.

In that case, like Sp said. And the number of decks does not matter.

well this is embarrassing but for some reason i am getting a higher number, what am i missing?

Spoiler for


  • 0

#9 BMAD

BMAD

    Senior Member

  • Members
  • PipPipPipPip
  • 1679 posts
  • Gender:Female

Posted 25 March 2013 - 04:51 AM

 


 


Assume that a four of a kind is defined as only needing to match the numeric (or letter?) value or in other words that suits do not matter.

In that case, like Sp said. And the number of decks does not matter.

well this is embarrassing but for some reason i am getting a higher number, what am i missing?

Spoiler for

 

Oops. for some reason i had it in my head that there were 14 card types... oopsies


  • 0

#10 Prime

Prime

    Senior Member

  • Members
  • PipPipPipPip
  • 872 posts
  • Gender:Male
  • Location:Illinois, US

Posted 25 March 2013 - 04:53 AM

 


 


Assume that a four of a kind is defined as only needing to match the numeric (or letter?) value or in other words that suits do not matter.

In that case, like Sp said. And the number of decks does not matter.

well this is embarrassing but for some reason i am getting a higher number, what am i missing?

Do your decks have Jokers? (Wouldn't matter, anyway, since Joker helps making 4 of a kind.) I assume, standard deck is 52 cards 2 - 10, J, Q, K, A.

Spoiler for

If the above assumptions are correct, but the answer is still wrong, I give up and would like to see a list of more cards than Sp posted not having at least 1 four of a kind.


  • 0

Past prime, actually.





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users