theory11 — Magic Tricks & the World's Finest Playing Cards

Saturday Night Contest - Guess Again

Hmmm....let's see....

55 possible cards per deck......possibility of 2 decks.....so

55x55 = 3025 possible combinations....we have a 1 in 3025 chance of getting it right. WOW.

Guess 1: 2H + Double backer
Guess 2: AH + AS
Guess 3: QH + KH
Guess 4: Joker + Double Backer

thats not how math works

as its been said before there are 56 possible cards
having two decks means that there are 112 possible cards
you have to pick two
the odds of getting the pair right is 1/(112 choose 2)

*choose is a mathematical function
google 112 choose 2

now, if you consider the hint meaning that both cards are the same card
then you are essentially picking one card from 56
so the odds of you of guessing correctly is 1/56

please people
learn some statistics before talking like you know
 
Guess 1 : 2 double backers.
Guess 2 : 1 Joker 1 Double backer
Guess 3 : King of diamonds and Jack of hearts.
 
thats not how math works

as its been said before there are 56 possible cards
having two decks means that there are 112 possible cards
you have to pick two
the odds of getting the pair right is 1/(112 choose 2)

*choose is a mathematical function
google 112 choose 2

now, if you consider the hint meaning that both cards are the same card
then you are essentially picking one card from 56
so the odds of you of guessing correctly is 1/56 ;)

Actually, Phil is right bud. If you have 55 cards out of two decks. And assume any of them can be chosen. Thats 55 cards, and you still can pick from those 55 cards, I.E. 55*55. Your way assumes all 112 cards are unique. There are doubles of each. So you need to divide your answer by 2. You should take a lesson from stats, ;)

As for the ad card, it has no back. Its an ad on both sides, so its only 55 cards :P

-ThrallMind
 
First guess: Ten of clubs and Ten of clubs

Second guess: Three of hearts and Three of hearts

Third guess: ace of clubs and ace of clubs

Am I copying anyone?