Answer:
7/51
Step-by-step explanation:
Assuming that the marbles are drawn without replacement, the probability of the first marble being drawn is 7/(7+8+3) which is 7/18.
The probability of the second marble being red is 6/17, as there are 6 red marbles left and 17 marbles in the bag.
We then multiply 7/18 and 6/17, getting 7/51.
