A bag contains 6 red balls and 4 blue balls. If two balls are drawn at random without replacement, what is the probability that both balls are red?

✓ Correct Answer: Option A

Total balls = 6 red + 4 blue = 10. Probability of drawing the first red ball = 6/10. After drawing one red ball, there are 5 red balls left and a total of 9 balls. Probability of drawing a second red ball = 5/9. The probability of both being red is (6/10) * (5/9) = 30/90 = 1/3.