Answer:
16.7%.
Explanation:
In this case, we know that although the marble is selected, it is replaced, that is, the total value of marbles never changes.
We know that in total there are 6 (3 + 2 + 1)
The probability of drawing a red is:
3/6
The probability of getting a yellow is:
2/6
Therefore the probability of drawing a red and a yellow is:
3/6 * 2/6 = 6/36 = 1/6 = 0.167
In other words, the probability of this happening would be 16.7%.