Probability helps us to know the chances of an event occurring. The number of black, blue, green and red marbles in the bag are 4, 3, 2, and 1 respectively.
What is Probability?
Probability helps us to know the chances of an event occurring.
[tex]\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}[/tex]
Given Joanne has 10 marbles in a bag. Also, she does an experiment whose results are as follows:
- She chooses a black marble 24 times.
- She chooses a blue marble 18 times.
- She chooses a green marble 12 times.
- She chooses a red marble 6 times.
The number of black marbles in the bag is equal to the product of Probability of getting a black marble and the number of marbles. Therefore,
The number of black marbles = (24/60)×10 = 4
The number of blue marbles in the bag is equal to the product of Probability of getting a blue marble and the number of marbles. Therefore,
The number of blue marbles = (18/60)×10 = 3
The number of green marbles in the bag is equal to the product of Probability of getting a green marble and the number of marbles. Therefore,
The number of green marbles = (12/60)×10 = 2
The number of red marbles in the bag is equal to the product of Probability of getting a red marble and the number of marbles. Therefore,
The number of black marbles = (6/60)×10 = 1
Hence, the number of black, blue, green and red marbles in the bag are 4, 3, 2, and 1 respectively.
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