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A card is drawn from a pack of 52 cards....

A card is drawn from a pack of 52 cards. Find the probability of getting:
(iv) either a red or a face card.

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The correct Answer is:
To find the probability of drawing either a red card or a face card from a standard deck of 52 cards, we can follow these steps: ### Step 1: Identify the total number of cards A standard deck has a total of 52 cards. ### Step 2: Count the number of red cards In a deck, there are 26 red cards (13 hearts and 13 diamonds). ### Step 3: Count the number of face cards Face cards include Kings, Queens, and Jacks. There are 4 of each type (one for each suit): - Kings: 4 - Queens: 4 - Jacks: 4 Thus, the total number of face cards is: \[ 4 + 4 + 4 = 12 \] ### Step 4: Count the number of red face cards Among the face cards, the red ones are: - Red Kings: 2 (1 from hearts and 1 from diamonds) - Red Queens: 2 (1 from hearts and 1 from diamonds) - Red Jacks: 2 (1 from hearts and 1 from diamonds) Thus, the total number of red face cards is: \[ 2 + 2 + 2 = 6 \] ### Step 5: Use the formula for the union of two events To find the total number of cards that are either red or face cards, we can use the formula for the union of two events: \[ N(R \cup F) = N(R) + N(F) - N(R \cap F) \] Where: - \( N(R) \) = Number of red cards = 26 - \( N(F) \) = Number of face cards = 12 - \( N(R \cap F) \) = Number of red face cards = 6 Substituting the values: \[ N(R \cup F) = 26 + 12 - 6 = 32 \] ### Step 6: Calculate the probability The probability of drawing either a red card or a face card is given by: \[ P(R \cup F) = \frac{N(R \cup F)}{Total \, cards} = \frac{32}{52} \] ### Step 7: Simplify the probability To simplify \( \frac{32}{52} \): \[ \frac{32 \div 4}{52 \div 4} = \frac{8}{13} \] ### Final Answer The probability of drawing either a red card or a face card is: \[ \frac{8}{13} \] ---
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Knowledge Check

  • A card is drawn from a pack of 52 cards .find the probability of getting spade or ace or red card.

    A
    `(9)/(13)`
    B
    `(4)/(13)`
    C
    `(11)/(13)`
    D
    `(10)/(13)`
  • One card is drawn from a well-shuffled deck of 52 cards. Find the probability of getting a red face card.

    A
    1/52
    B
    3/26
    C
    1/26
    D
    1/13
  • A card is drawn from a deck of 52 cards. Find the probability of getting a red card or a heart or a king.

    A
    `6/13`
    B
    `7/13`
    C
    `11/26`
    D
    `15/26`
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