Math Problem Statement

Suppose one card is drawn at random from a standard deck. What is the probability that the card drawn is a heart? What is the probability that the card drawn is a four? What is the probability that the card drawn is a heart and a four?

Solution

Let's go through each question using the information in the image.

Solution:

  1. Total Cards: A standard deck has 52 cards.

(a) What is the probability that the card drawn is a heart?

  • There are 13 hearts in the deck (one for each rank: Ace, 2, 3, ..., King).
  • Probability P(Heart)=Number of HeartsTotal Cards=1352=14P(\text{Heart}) = \frac{\text{Number of Hearts}}{\text{Total Cards}} = \frac{13}{52} = \frac{1}{4}.

Answer for (a): 14\frac{1}{4}.

(b) What is the probability that the card drawn is a four?

  • There are 4 fours in the deck (one in each suit: Hearts, Diamonds, Spades, Clubs).
  • Probability P(Four)=Number of FoursTotal Cards=452=113P(\text{Four}) = \frac{\text{Number of Fours}}{\text{Total Cards}} = \frac{4}{52} = \frac{1}{13}.

Answer for (b): 113\frac{1}{13}.

(c) What is the probability that the card drawn is a heart and a four?

  • There is only one card that is both a heart and a four (the Four of Hearts).
  • Probability P(Heart and Four)=Number of Fours of HeartsTotal Cards=152P(\text{Heart and Four}) = \frac{\text{Number of Fours of Hearts}}{\text{Total Cards}} = \frac{1}{52}.

Answer for (c): 152\frac{1}{52}.


Would you like any further details or explanations on these solutions?

Related Questions:

  1. What is the probability of drawing a red card from a standard deck?
  2. What is the probability of drawing a face card (Jack, Queen, or King)?
  3. What is the probability of drawing a black card that is a spade?
  4. What is the probability of drawing an Ace?
  5. What is the probability of drawing a card that is either a heart or a four?

Tip:

In probability, if you want to find the probability of drawing either of two types of cards, you can add their individual probabilities only if there’s no overlap between the two categories.

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Math Problem Analysis

Mathematical Concepts

Probability
Counting in Combinatorics

Formulas

Probability formula: P(Event) = Number of Favorable Outcomes / Total Number of Outcomes

Theorems

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Suitable Grade Level

Grades 5-7