I draw one card from a deck and look at it. I tell you it is red. What is the probability it is a heart? And what is the probability it is red, given that it is a heart?

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asked Aug 5, 2021 190k views

5 votes

I draw one card from a deck and look at it. I tell you it is red.

What is the probability it is a heart?

And what is the probability it is red, given that it is a heart?

Mathematics
middle-school

Darwin Von Corax asked

by Darwin Von Corax

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2 Answers

6 votes

Answer:

½; 1

Explanation:

P(H/R) = 13/26 = 1/2

P(R/H) = 1 because al hearts are red

Jonathan Ellis answered Aug 6, 2021

by Jonathan Ellis

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4 votes

Answer:

10%

Explanation:

Naseema answered Aug 8, 2021

by Naseema

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