Question

There is a box contains 4 Red,3 Blue and 1 Black identical balls. For each Red ball withdrawn (without replacement), you have to put 1 Blue and 1 Black in the bag. For each Blue ball withdrawn (without replacement), you have to put 2 Blue and 1 Red ball. If the first ball drawn is red, what will be the contents of the box just before withdrawn the second ball?

a)2 Red, 3 Blue and 1 Black

b)3 Red, 4 Blue and 2 Black

c)4 Red, 3 Blue and 2 Black

d)3 Red, 2 Blue and 1 Black ​

Answer 1

Answer:

Step-by-step explanation:

Starting State: 4 Red, 3 Blue, 1 Black

1 Red = 1 Blue + 1 Black

Thus, after Red ball is withdrawn; contents of the box are

(4-1) Red , (3 + 1) Blue , (1 + 1) Black

i.e. 3 Red, 4 Blue, 2 Black

i.e. Option B