Oh, dude, you're talking about a standard deck of 52 cards, right? So, like, there are 26 red cards and 26 black cards in there. If you're picking 4 cards randomly, the probability of getting 2 red and 2 black suits would be calculated by like, dividing the number of ways you can choose 2 red and 2 black cards by the total number of ways to choose 4 cards from 52. It's like a math problem, but with cards, man.
The probability of getting on the first draw a black ball is: P(B1) = 3/7. The probability of getting a red ball given the event of drawing a black ball on the first draw is: P(R2│B1) = 4/6. The probability of drawing a black ball on the first draw and a red ball on the second draw is: P(B1UR2) = P(B1)∙P(R 2│B1) = (3/7)∙(4/6) = 0.2857... ~ 0.286 ~ ~ 28.6%
1/3
4 out of 25
The probability of pulling a red or yellow marble out of a bag of 3 green 8 red 8 yellow and 3 black marbles is 16 out of 22, or about 0.73.
5/6
a black one
The probability of getting a diamond and a black seven is zero. Diamonds are red.
1/26
50%
The probability of getting a red card out of a standard 52 card deck is 26 in 52, or 0.5. The probability of getting a second red card is 25 in 51, or 0.490, because one red card is missing, and the deck is short by one card. The probability of getting a black card next is 26 in 50, or 0.52, because the deck is short by two cards, but all the black cards are there. Multiply these probabilities together, and you get about 0.127, or about 1 in 8, so the probability of getting 2 red cards and then a black card in a random 52 card deck is about 1 in 8.
There are 6 black face card in a deck of 52 cards, so the probability of getting a black face card is 6/52 = 3/26
50%
There are 8 marbles that aren't black, out of a total of 12 marbles, so the probability is 8/12 or 2/3.
It is 3/4.
The probability depends on:whether the cards are drawn randomly,how many cards are drawn, andwhether the cards are replaced before drawing the next card.If only 2 cards are drawn randomly, and without replacement, the probability is 0.00075 approximately.
It is 5/52 for a single card, drawn randomly.
About a 3.8% chance (2 / 52 = 0.038...).