Raymond B. answered 10/12/20
Math, microeconomics or criminal justice
P(diamond) = 13/52 = 1/4, with a 52 card deck and no jokers
Then there's 51 cards with 12 diamonds and 13 hearts as red cards, so it's (12+13)/53 = 25/53 chance of red on the 2nd draw.
Then multiply the two probabilities together to get: 1/4 x 25/53 = 25/212 which should be slightly less than 1/8 or slightly less than 0.1250.
Answer is 0.1180 rounded to 4 decimal places.
You know that had the card been replaced, odds of a red card would have been 1/2 on the 2nd draw, and 1/4 x 1/2 = 1/8 = 0.1250, so without replacement will be slightly less.