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Homework Help: Probability of deck of cards question

  1. Mar 10, 2010 #1
    1. The problem statement, all variables and given/known data

    Use probability trees to determine the probability of obtaining,in a deck of cards:

    two red cards (A-10 hearts or diamonds) and two picture cards (any suit) in any order?
    2. Relevant equations



    3. The attempt at a solution
    P(1st red card)= 20/52 P (2nd red card)=19/51
    P(1st picture card) = 12/52 P(2nd picture card)=11/51
    How would you combine these together to get the solution? Do you use joint probability?
     
  2. jcsd
  3. Mar 10, 2010 #2
    I don't know joint probability. But you can get the answer by multiplying the numbers together.
     
  4. Mar 11, 2010 #3
    I don't know much about cards (can you tell me how many picture cards and how many color cards are there in a deck)
     
  5. Mar 11, 2010 #4
    Do you replace the first card once picked out of the deck?
     
  6. Mar 11, 2010 #5
    Are you serious you don't know? There are Jacks, Queens and Kings (picture), Ace's, 2-10's. Four of each.
     
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