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Assuming a standard deck of 52 cards with aces counting as 1 and all face cards counting as 10, there are:
16 ways of drawing an ace and an 8,
16 ways of drawing a 2 and a 7
16 ways of drawing a 3 and a 6
16 ways of drawing a 4 and a 5, for a total of 64 ways to draw 2 cards whose sum is 9.
There are 52!/(50!2!) = 1,326 ways to draw two cards, so the probability is 64/1326 = 0.048, or about 1 in 21.
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If you draw 2 cards from a standard deck of 52 cards what is the probability that they will both be spades?
It is 156/2652 = 0.0588
What is probability of drawing a seven or a nine out of cards?
Probability of drawing a 7 or 9 is the probability of draw a 7 plus the probability of draw a 9 which is 4/52 + 4/52 = 8/52 = 2/13 = 0.1538.
Suppose you draw a card randomly from a normal deck of cards what is the probability you will draw a black 4?
About a 3.8% chance (2 / 52 = 0.038...).
If you draw a card from a standard deck of cards what is the probability of drawing a red card?
There are 2 red suits and 2 black suits. Therefore the probability of drawing a red card is 1/2. Or 50% chance.
What is the probability of choosing a queen or a king from a standard deck of cards?
The probability of drawing a queen or king, in a single randomly drawn card, is 2/13. The probability of drawing one when you draw 45 cards without replacement is 1. The probability of choosing has nothing t do with the probability of drawing the card. I can choose a king but fail to find one!
