Mathematics
A bag contains 8 red, 4 white and 3 black balls. One ball is drawn at random. What is the probability that the ball drawn is:
(i) white?
(ii) red or white?
(iii) neither red nor white?
(iv) not red?
Related Questions
There are 25 discs numbered 1 to 25. They are put in a closed box and shaken thoroughly. A disc is drawn at random from the box. Find the probability that the number on the disc is:
(i) an odd number
(ii) divisible by 2 and 3 both
(iii) a number less than 16
In a class of 40 students, there are 16 boys and the rest are girls. From these students, one is selected at random. What is the probability that the selected student is a girl?
A bag contains 6 black, 5 white and 9 green balls. One ball is drawn at random. What is the probability that the ball drawn is:
(i) black?
(ii) not green?
(iii) either white or green?
(iv) neither white nor black?
One card is drawn at random from a well-shuffled deck of 52 cards. Find the probability of drawing:
(i) an ace
(ii) a 5 of a red suit
(iii) a black queen
(iv) a jack of spades
(v) a 10 of hearts
(vi) a face card