A bag contains 5 white and 7 red balls. One ball is drawn at random. What is the probability that ball drawn is white?

What is the probability that a number selected from the numbers 1, 2, 3, …., 15 is a multiple of 4?

A bag contains 6 red, 8 black and 4 white balls. A ball is drawn at random. What is the probability that ball drawn is not black?

A bag contains 4 red, 5 black and 6 white balls. One ball is drawn from the bag at random. Find the probability that the ball drawn is:

(i) white

(ii) red

(iii) not black

(iv) red or white

A bag contains 3 red balls and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is :

(i) red

(ii) black