Question

In a bag of 36 balls, 30 are green, 2 are blue and rest are red. The probability that the second ball is red if the first one is blue is :

Answer 1

Total balls = 36

Green balls = 30

Blue balls = 2

Red balls = 36 - ( 30 + 2 )

= 36 - 32 = 4

Now, after taking out one blue ball,

Balls left = 36 - 1 = 35

Now,

Total outcomes = 35

Favourable outcomes of getting a red ball = 4

P ( x ) = Favourable outcomes / total outcomes

P ( getting a red ball ) = 4 / 35

Answer 2

Answer:

Step-by-step explanation:

there are 30 green balls , 2 blue balls and 4 red balls.

probability( 1 Blue followed by 1 red) = 2/36*4/35 = 1 / 210.