Probability — Easy JEE math MCQ
A bag contains 4 red and 6 blue balls. Two balls are drawn without replacement. The probability that the second ball is red given that the first ball drawn was blue is:
- A. 4/10
- B. 4/9
- C. 3/9
- D. 6/10
Solution
After drawing a blue ball first, remaining balls = 4 red + 5 blue = 9. Probability that second ball is red = 4/9.