5/13
Drawing a spade or club.
0.5
26/52
after drawing the red card; deck status is:25 red and 26 black cards, total 51 cardsFirst part, drawing 13 black cards:probability of drawing 1st black card: 26/51probability of drawing 2nd black card: 25/50and so on .......till, probability of drawing 13th black card: 14/39overall probability= 26/51 * 25/50 * ...... 14/39Second part, drawing 13 red cards:probability of drawing 1st red card: 25/51probability of drawing 2nd red card: 24/50and so on .......till, probability of drawing 13th red card: 13/39overall probability = 25/51 * 24/50* ...... 13/39
You get a black card by drawing it.
The drawing of a black card is a process, not a fraction.
5/13
Drawing a spade or club.
It is 8/13.
0.5
26/52
after drawing the red card; deck status is:25 red and 26 black cards, total 51 cardsFirst part, drawing 13 black cards:probability of drawing 1st black card: 26/51probability of drawing 2nd black card: 25/50and so on .......till, probability of drawing 13th black card: 14/39overall probability= 26/51 * 25/50 * ...... 14/39Second part, drawing 13 red cards:probability of drawing 1st red card: 25/51probability of drawing 2nd red card: 24/50and so on .......till, probability of drawing 13th red card: 13/39overall probability = 25/51 * 24/50* ...... 13/39
The probability of drawing a red or black card from a standard deck of playing cards is 1 (a certainty). This is because these are the only options available.
it is a 1/4
1/26
1/26