How many different 5-card hands with at least 3 hearts can be dealt from a standard deck of 52 cards?Hint: See “Did You Know?” on page 535 of the textbook if you are not familiar with a standard deck of cards.a.517,644b.211,926c.241,098d.2,543,112
Question
How many different 5-card hands with at least 3 hearts can be dealt from a standard deck of 52 cards?Hint: See “Did You Know?” on page 535 of the textbook if you are not familiar with a standard deck of cards.a.517,644b.211,926c.241,098d.2,543,112
Solution
To solve this problem, we need to consider two cases: getting exactly 3 hearts and getting more than 3 hearts (4 or 5).
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Exactly 3 hearts: There are 13 hearts in a deck of 52 cards. The number of ways to choose 3 hearts from 13 is "13 choose 3", denoted as C(13,3). The remaining 2 cards must be from the 39 non-heart cards. The number of ways to choose 2 from 39 is C(39,2). So, the total number of ways to get exactly 3 hearts is C(13,3) * C(39,2).
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More than 3 hearts: This can be either 4 hearts or 5 hearts.
a. 4 hearts: The number of ways to choose 4 hearts from 13 is C(13,4). The remaining card must be from the 39 non-heart cards, which is C(39,1). So, the total number of ways to get exactly 4 hearts is C(13,4) * C(39,1).
b. 5 hearts: The number of ways to choose 5 hearts from 13 is C(13,5). So, the total number of ways to get exactly 5 hearts is C(13,5).
Adding all these possibilities together gives the total number of 5-card hands with at least 3 hearts.
So, the answer is C(13,3)*C(39,2) + C(13,4)*C(39,1) + C(13,5).
Now, let's calculate these values:
C(13,3) = 286, C(39,2) = 741, C(13,4) = 715, C(39,1) = 39, C(13,5) = 1287.
So, the total number of 5-card hands with at least 3 hearts is 286741 + 71539 + 1287 = 211,926.
So, the correct answer is (b) 211,926.
Similar Questions
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