Question

1. There are 4 white and 3 black balls in a box. In
another box, there are 3 white and 4 black balls
An unbiased die is rolled. If it shows a number
less than or equal to 3, then a ball is drawn from
the second box, otherwise from the first box. If the
ball drawn is black, then the probability that the
ball was drawn from the first box is?​

Answer 1

Answer:

1. There are 4 white and 3 black balls in a box. In

another box, there are 3 white and 4 black balls

An unbiased die is rolled. If it shows a number

less than or equal to 3, then a ball is drawn from

the second box, otherwise from the first box. If the

ball drawn is black, then the probability that the

ball was drawn from the first box is?