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John has a bag of marbles that contains 12 red marbles, 20 green marbles, and 17 blue marbles.  Problem 1) What is the probability that he will NOT get red? Need help now please this is due tomorrow!

Sagot :

Gabriel24
12 red marbles
20 green marbles
17 blue marbles
Total amount: 39 marbles

39 (total) - 12 (red) = 27.

John has a probability of 27/39 that he will not pick a red marble out of the bag.
If you want to simplify your fraction by dividing both numbers by 3 to make it even more accurate, an even better answer would be 9/13.

(so all you do is divide 27/3 and divide 39/3 aswell which gives you 9 and 13.)

Solution: The probability that he will not get red marbles is [tex]\frac{37}{49}[/tex].

Explanation:

It is given that the john has 12 red marbles, 20 green marbles and 17 blue marbles in his bag.

The total number of marbles in the bag is [tex]12+20+17=49[/tex], therefore the number of total outcomes is 49.

If john will not get red marble it means he get blue and green marble, therefore the number of possible outcomes is [tex]20+17=37[/tex].

The probability is the ratio of possible outcomes and total outcomes.

Probability of not getting red marble =[tex]\frac{37}{49}[/tex].

Therefore, the probability that he will not get red marbles is [tex]\frac{37}{49}[/tex].

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