Question

Inhein behad daraar for red balls five grain bowls seven blue boss bol picked up randomly what is the probability of getting either blue or red​

Answer 1

Answer:

You can choose 2 red balls in  (52)=10  ways.

You can choose 2 black balls in  (62)=15  ways.

So you can choose two balls that are the same color in

(52)+(62)  ways (that is 25 ways).

You can choose the 2 out of 11 balls in  (112)=55 ways.

Thus, the relevant probability is the following:

P=(52)+(62)(112)  

=2555  

=511 .

So the probability that two balls are picked that are of the same color is  511  which is approximately 0.455.