Question

You draw a card at random from a deck that contains 3 black cards and 7 red cards. What is the probability of drawing a black card

Answer 1

Probability of drawing a black card = or 0.3 .

Explanation:

Given: You draw a card at random from a deck that contains 3 black cards and 7 red cards.

To find: What is the probability of drawing a black card.

Solution: We have given that

A deck that contains black cards = 3.

Red cards = 7.

Total card = 10.

Probability of drawing a black card = .

Probability of drawing a black card = 0.3.

Therefore, Probability of drawing a black card = or 0.3 .

Answer 2

Probability of drawing a black card =
`(3)/(10)` or 0.3 .

Explanation:

Given : You draw a card at random from a deck that contains 3 black cards and 7 red cards.

To find : What is the probability of drawing a black card.

Solution : We have given that

Deck that contains black cards = 3.

Red cards = 7.

Total card = 10.

Probability of drawing a black card =
`(3)/(10)`.

Probability of drawing a black card = 0.3.

Therefore, Probability of drawing a black card =
`(3)/(10)` or 0.3 .