Probability questions

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? A. 1/3 B. 3/4 C. 7/19 D. 8/21 E. 9/21

A. 1/3

A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue? A. 10/21 B. 11/21 C. 2/7 D. 5/7

A. 10/21

In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:

A. 21/46

Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?

B. 3/4

Two dice are tossed. The probability that the total score is a prime number is:

B. 5/12

A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is:

C. 1/26

What is the probability of getting a sum 9 from two throws of a dice? A. 1/6 B. 1/8 C. 1/9 D. 1/12

C. 1/9

In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?

C. 2/7

A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is:

C. 2/91

From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings?

D. 1/221

Three coins are tossed. What is the probability of getting at most two heads? A. 3/4 B. 1/4 C. 3/8 D. 7/8

D. 7/8

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5? A. 1/2 B. 2/5 C. 8/15 D. 9/20

D. 9/20