Probability 4 Question 7
7. One of the two boxes, box I and box II was selected at random and a ball was drawn randomly out of this box. The ball was found to be red. If the probability that this red ball was drawn from box II, is
(a)
(b)
(c)
(d)
Show Answer
Answer:
Correct Answer: 7. (b)
Solution:
Let
Given,
Now, check options, then clearly options (a) and (b) satisfy.
