Answer:
The probability that two orange marbles are drawn (and only those two), is 1/66, or approximately 1.5%
Step-by-step explanation:
The total number of marbles in the bag is 2 + 4 + 6, which equals 12.
We're told that there are two yellow marbles, so the chance of picking a yellow one on the first try is 2/12, or 1/6.
After that marble is drawn, we now have 11 marbles in the bag, and only 1 of them is yellow, so the chance of drawing a second yellow marble is 1/11
The total probability of drawing two yellow marbles then is:
1/6 × 1/11 = 1/66, or approximately 1.5%
