Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Mathematics (https://www.askmehelpdesk.com/forumdisplay.php?f=199)
-   -   How many five card hands are there that has either an Ace or a Spade (https://www.askmehelpdesk.com/showthread.php?t=505334)

  • Sep 6, 2010, 06:34 PM
    kevin88
    How many five card hands are there that has either an Ace or a Spade
    Five cards are chosen from a standard 52 card deck. How many hands include either an Ace or a Spade.
  • Sep 6, 2010, 07:52 PM
    creahands

    U have 13 spades and 3 extra aces for a total of 16 cards.

    U can make 10 -5 card hands with deck. This will give u a possibility of 10 hands with at lest one spade or and ace

    Chuck
  • Sep 7, 2010, 08:20 AM
    ebaines

    I'm afraid creahands's answer is incorrect. The way to approach this is as follows:

    As already pointed out, there are 16 cards that satisfy the condition of being either an ace or a spade. That means there are 52-16 = 36 cards that do not satisfy either condition. Here are two ways to continue:

    1. First determine how many hands can be dealt with exactly one spade/ace card and 4 others. This would be C(5,1)x16x36*35*34*33. Then add the number of hands that can have two spade/ace cards and three others, plus the number of hands with three spade/ace and 2 others, plus hands with 4 space/ace and 1 other, plus hands with 5 spade/ace and 0 others.

    2. An easier way: determine how many total 5-card hands there are in a 52-card deck, then subtract the number of 5-card hands that consist only of non spade/ace cards:

    P(52,5) - P(36,5)
  • Sep 7, 2010, 04:39 PM
    creahands
    If the question is how many combination can be dealt, then my answer is incorrect.

    If, however, the question is how many can dealt from a 52 card deck then answer is correct. U can only get 10 hands out of a 52 card deck.

    Chuck
  • Sep 7, 2010, 09:45 PM
    morgaine300

    If the problem meant for the hand to be sat aside, and then pick another hand from what was left, it would say so. And I've never seen a question wanting to know what it is you were stating.

    It wants combinations, i.e. one hand could have a crossover with another hand.
  • Sep 7, 2010, 09:51 PM
    morgaine300
    Speaking of which, shouldn't that be combinations and not permutations?
  • Sep 7, 2010, 10:23 PM
    Unknown008

    Isn't the question asking for only one spade or one ace?

    So, this comes simply to:

  • Sep 7, 2010, 10:34 PM
    morgaine300

    I wondered about that too. A little on the interpretive side. It says "an" ace or "a" spade. As though they may mean just one of them.

  • All times are GMT -7. The time now is 11:02 PM.