In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?

1/3

3/4

7/19

8/21

Correct Answer : A

What is the probability of getting a sum 9 from two throws of a dice?

If three balls are randomly drawn from the bag, then what is the probability that al least 1 is red.

If three balls are randomly drawn from the bag, then what is the probability that one is Blue and other 2 are of other than Blue.