10. Scarlett selects a card at random from a
deck that contains 18 red, 12 yellow, and
20 blue cards. What is the probability that
she does not select a red card?
A 13/25
B 16/25
C 18/25
D 24/25

Respuesta :

Solution: sum of all cards equals 50. Probability of not selecting a red card equals 12+20/50=32/50=16/25 B

The probability that Scarlett does not select a red card is 16/25

The correct answer is an option (B)

What is probability?

"Probability is a branch of mathematics which deals with finding out the likelihood of the occurrence of an event."

Formula of the probability of an event A is:

P(A) = n(A)/n(S)

where,  n(A) is the number of favorable outcomes, n(S) is the total number of events in the sample space.

For given question,

Scarlett selects a card at random from a deck that contains 18 red, 12 yellow, and 20 blue cards.

Total cards n(S) = 18 + 12 + 20

n(S) = 50

Let event A: Scarlett selects a red card

n(A) = 18

So, the probability of selecting red card would be,

⇒ P(A) = n(A) / n(S)

⇒ P(A) = 18/50

⇒ P(A) = 9/25

So, the probability of not selecting a red card would be,

⇒ P = 1 - P(A)

⇒ P = 1 - (9 / 25)

⇒ P = 16/25

Therefore, the probability that Scarlett does not select a red card is 16/25

The correct answer is an option (B)

Learn more about probability here:

brainly.com/question/11234923

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