Question

There are three boxes containing balls respectively I white, 2 red and 3 black; 2 white 3 red 1 black: 3 white, 1 red , 2 black. A box chosen at random and from it two balls are drawn at random. The two balls are one red and one white, What is the probability that they come from First box and From third box​

Answer 1

1 b 58 21

2 a 1 2

3 d 65a 6

4 c 115 cm

5 a 8 m