Answer:
The probability of not getting yellow is 2/3 ⇒ 3rd answer
Step-by-step explanation:
* Lets describe the meaning of experimental probability
- Experimental probability is the ratio of the number of times an
event occurs to the total number of trials
∵ There are 6 blue marbles , 4 yellow marble and 2 red marbles
∴ the total number of marbles = 6 + 4 + 2 = 12 marbles
- The probability of each color is the number of the marbles have the
same color divided by the total number of the marbles
∴ The probability of blue marbles = 6/12 = 1/2
∴ The probability of yellow marbles = 4/12 = 1/3
∴ The probability of red marbles = 2/12 = 1/6
- To find the probability of not yellow you can add the probability of
blue and red OR subtract the probability of yellow from 1 because
the total of probability of all colors is 1
∴ The probability of not yellow = 6/12 + 2/12 = 8/12 = 2/3
OR
∴ The probability of not yellow = 1 - 4/12 = 12/12 - 4/12 = 8/12 = 2/3
* The probability of not getting yellow is 2/3
