A bag contains 4 blue marbles, 2 black marbles, and 3 red marbles. If a marble is randomly drawn from the bag, what is the probability that it is NOT black?

Question

Geekhawk · Answer

There are 4 blue marbles There are 2 black marbles There are 3 red marbles There are a total of 9 marbles You minus the black marbles from the total 9-2=7 If there are 7 non black marbles then the ratio is 7:9 7:9 is the probability that you won't get a black marble

Answered by Geekhawk | 2024-06-10

Geekhawk · Answer

The probability that a marble drawn from the bag is NOT black is 9 7 ​ . This is calculated by finding the total number of non-black marbles (7) and dividing that by the total number of marbles (9). 
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A bag contains 4 blue marbles, 2 black marbles, and 3 red marbles. If a marble is randomly drawn from the bag, what is the probability that it is NOT black?

Answer (2)

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