Q32 / 60 · JEE Advanced 2013 (Paper 2) · Mathematics
Paragraph:
A box $B_{1}$ contains $1$ white ball, $3$ red balls and $2$ black balls. Another box $B_{2}$ contains $2$ white balls, $3$ red balls and $4$ black balls. A third box $B_{3}$ contains $3$ white balls, $4$ red balls and $5$ black balls.
Question:
If $2$ balls are drawn (without replacement) from a randomly selected box and one of the balls is white and the other ball is red, the probability that these $2$ balls are drawn from box $B_{2}$ is
Question: If $2$ balls are drawn (without replacement) from a randomly selected box and one of the balls is white and the other ball is red, the probability that these $2$ balls are drawn from box $B_{2}$ is
- A
- B
- C
- Correct answerD
Solution
Let one ball is white and other is red
both balls are from box
both ball are from box
both ball are from box
Hence,
both balls are from box
both ball are from box
both ball are from box
Hence,
Hence, the correct answer is option: 'D'.