What is the probability of red cards to diamonds in a standard deck of cards?

Question

We are looking for the probability of red cards to diamond cards (conditional probability).  We have the answer in the book that is "one" and we are not sure how that is the answer.  P(red | diamond)  Thank you!

Answer 1

The probability of diamond being red is 1 (certainty) because all diamonds (in cards) are red. However, the probability of a red card being a diamond is 1/2 because there are as many hearts as diamonds. The probability of a card being red is 1/2 because half the cards in a pack are black and half red. The probability of a card being a diamond is 1/4 because there are four different suits. I hope this helps.

Answer 2

 here we put a probility of 0.5 cz of an equal chances available .The probability of diamond being red is 1 (certainty) because all diamonds (in cards) are red. However, the probability of a red card being a diamond is 1/2 because there are as many hearts as diamonds. The probability of a card being red is 1/2 because half the cards in a pack are black and half red. The probability of a card being a diamond is 1/4 because there are four different suits.