Question
A jar has 20 marbles in eight of them were green. You pull three marbles without replacement. What is the probability that all are green
Answers
GPT 3.5
To calculate the probability that all three marbles are green, we need to consider the total number of ways to pull three marbles from the jar without replacement and the number of ways to pull three green marbles from the eight green marbles.
Total number of ways to pull three marbles from 20 marbles = 20C3 = 1140 ways
Number of ways to pull three green marbles from 8 green marbles = 8C3 = 56 ways
Therefore, the probability of pulling three green marbles is:
56/1140 ≈ 0.0491 or 4.91%
Total number of ways to pull three marbles from 20 marbles = 20C3 = 1140 ways
Number of ways to pull three green marbles from 8 green marbles = 8C3 = 56 ways
Therefore, the probability of pulling three green marbles is:
56/1140 ≈ 0.0491 or 4.91%