MCQ Probability

1. A box contains 100 pens. Out of which eight are defective. One pen is out from the box. Find the probability that the pen is not defective.

8/10

23/25

100/8

25/23

Question 1 of 20

2. A box contains 6 white, 2 black and 3 red balls. If a ball is drawn at random, what is the probability that it will not be white?

6/11

6/5

5/9

5/11

Question 2 of 20

3. Find, the probability that if a dice is thrown twice, the sum of the digits is 10.

1/36

5/36

1/12

Question 3 of 20

4. There are 30 balls in a bag on which the number 1, 2, 3 . . . . . . . 30 are marked one ball is drawn randomly from the bag. Find the probability that the number marked on the ball taken out of the bag is divisible by 4 or 6.

1/3

1/15

3/10

2/5

Question 4 of 20

5. To drawn an ace out the deck of cards probability can be.

1/13

12/13

9/13

15/26

Question 5 of 20

6. If tossing three coins at a time, the probability of getting at least one heads is:

1/8

3/8

7/8

1/2

Question 6 of 20

7. One black, one red and one green dice are thrown together, what is the probability of sum of three numbers is ≥ 17.

7/216

1/36

1/54

5/216

Question 7 of 20

8. King and Queen of black colour are taken out from a deck of 52 playing cards. A card is drawn from the remaining well-shuffled cards. Probability of getting a spade card is-

11/13

1/4

11/52

11/48

Question 8 of 20

9. A coin is tossed live times. What is the probability that there is at the least one tail?

1/2

1/16

31/32

1/32

Question 9 of 20

10. From a pack of cards two cards are drawn one after the other, with replacement. The probability that the first is a red card and the second is a king is -

15/26

3/52

1/26

11/26

Question 10 of 20

11. A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If three marbles are drawn what is the probability that one is yellow and two are red?

12/455

24/455

3/91

15/91

Question 11 of 20

12. If a number is chosen at random from the set {1, 2, 3, ......., 100}, then the probability that the chosen number is a perfect cube is -

1/2

1/10

4/13

1/25

Question 12 of 20

13. A fair coin is tossed thrice, what is the probability of getting all 3 same outcomes?

1⁄2

1⁄4

1⁄6

3⁄4

Question 13 of 20

14. Suppose 5 men out of 100 men and 10 women out of 250 women are colour blind, then find the total probability of colour blind people. (Assume that both men and women are in equal numbers.)

0.045

0.5

0.45

0.05

Question 14 of 20

15. Which of the following cannot be the value of probability?

-1

1/2

Question 15 of 20

16. A number is selected from the first 20 natural numbers. Find the probability that it would be divisible by 3 or 7?

24/67

7/20

19/46

12/37

Question 16 of 20

17. How many outcomes are possible when drawing a card from deck of cards?

Question 17 of 20

18. What is the probability of getting a number greater than 6 on dice?

1/2

1/3

Question 18 of 20

19. In a bucket there are 5 blue, 15 yellow, and 25 orange balls. If the ball is picked up randomly, find the probability that it is neither yellow nor blue?
In a bucket there are 5 purple, 15 grey and 25 green balls. If the ball is picked up randomly, find the probability that it is neither grey nor purple?

5/9

51/43

12/13

2/7

Question 19 of 20

20. What is the probability of a sure event?

1/4

1/2

Question 20 of 20

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