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What is the probability of drawing a king or a 9 from a standard 52 card deck of cards?
The probability of drawing a king or a nine from a standard deck of 52 cards is (4 + 4) in 52, or 8 in 52, or 2 in 13, or about 0.1538.
What is the probability of drawing a 9 or a jack in a deck of 52 cards?
There are four 9's and four jacks. If you can use all of them, you can use 8 out of 52 cards. The probability of drawing one of these cards is therefore 8/52 = 0.1538 or a 15.38 % chance.
What is the probability that you draw a 9?
...from what? Is is essential to know the properties of the items you are drawing from. If the question applies to a deck of cards (which the wording alludes to), then the probability is 1/13. There are 4 9's in a deck of cards, and there are 52 total cards. 4/52=1/13
What is the probability of drawing a king or a 9 from a standard 52 card deck of cards. put the answer in fraction?
It is 2/13.
When do you add a probability?
Use of the word "or" is addition; e.g. probability of drawing out of a standard deck of cards a 9 or a 10 which is 4/52 + 4/52 = 8/52 or 2/13.
