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A card is drawn at a random from a well-shuffled deck of playing cards. The probability that the card drawn is an ace or a red card is . NextReset

Respuesta :

P(Ace) = (4/52) =1/13
P(RED) = 1/2

P(ACE ∪ Red) = 1/13+ 1/2 = 15/26 = 0.577

Answer:

[tex]\frac{7}{13}[/tex]

Step-by-step explanation:

Total number of cards in deck of playing cards = 52

Number of ace in deck of playing cards i.e n(P)= 4

Number of red cards in deck of playing cards i,e n(Q) =

Number of diamonds + Number of hearts = 13+ 13 = 26

Number of ace which are red cards i,e [tex]n(P\cap Q)[/tex]= 2

To Find: [tex]n\left ( P\cup Q \right )[/tex]

Solution:

[tex]n\left ( P\cup Q \right )=n\left ( P \right )+n\left ( Q \right )-n\left ( P\cap Q \right )\\=4+26-2\\=28[/tex]

So, probability that the card drawn is an ace or a red card = [tex]n\left ( P\cup Q \right )[/tex]/Total number of cards

=[tex]\frac{28}{52}=\frac{7}{13}[/tex]