A bag contains 4 red, 6 blue, and 5 yellow marbles. What is the probability of randomly picking a red marble, then a yellow marble, without replacement?

✓ Correct Answer: Option C

Total marbles = 4+6+5=15. P(red first) = 4/15. After picking red, 14 marbles remain. P(yellow second) = 5/14. P(red then yellow) = (4/15) * (5/14) = 20/210 = 2/21 = 1/10.5 Incorrect calculation. P(red then yellow) = (4/15) * (5/14) = 20/210 = 2/21. Re-checking options and calculation. My options are wrong for 2/21. Let me re-calculate again.