PROBABILITY BASIC TEST-1

Online Course

1. The probability of getting a head when a coin is tossed is____

A. 1/4
B. 1/2
C. 4/5
D. 2/3
E. None

2. The probability of getting only one head when two coins are tossed is_____

A. 1/2
B. 5/16
C. 71/221
D. 1/4
E. None

3. The probability that at least one head appears in a single throw of three fair coins is

A. 1/8
B. 7/8
C. 1/3
D. 1/2
E. None

4. What is the probability of getting exactly 2 heads when 5 coins are tossed is ____

A. 5/16
B. 3/5
C. 1/4
D. 1/2
E. None

5. The probability of getting an even number when a die is thrown_____

A. 1/2
B. 1/6
C. 1/3
D. 1/4
E. None

6. The probability of getting a prime number less than 4, when a die is thrown is____

A. 1/5
B. 1/3
C. 5/32
D. 1/5
E. None

7. The probability of getting a doublet when 2 dice are thrown is ____

A. 1/6
B. 1/3
C. 5/32
D. 1/5
E. None

8. When 2 dice are rolled simultaneously, the probability of getting even number on both the dice is ___

A. 1/4
B. 1/13
C. 5/12
D. 3/8
E. None

9. When 2 dice are rolled simultaneously, the probability of getting even number on only one die is ___

A. 1/2
B. 3/8
C. 5/8
D. 2/8
E. None

10. Two dice are thrown together. The probability that ‘ the event that difference of numbers show is 2’ is

A. 2/9
B. 5/9
C. 4/9
D. 7/9
E. None

11. A card is drawn from a pack of cards the probability that it is a numbered card is ____

A. 9/13
B. 13/38
C. 5/13
D. 13/8
E. None

12. A card is drawn from a well- shuffled pack of playing cards. The probability that it is the ace of clubs is ____

A. 1/13
B. 1/4
C. 1/52
D. 1/5
E. None

13. Two cards are drawn from a well-shuffled pack of cards, the probability that only one card is an ace is____

A. 32/221
B. 5/18
C. 31/224
D. 52/8
E. None

14. 2 cards are drawn from a well shuffled pack of cards. The probability that one card is red knave and the other is a black numbered card is _____

A. 6/221
B. 5/223
C. 5/226
D. 6/226
E. None

15. A bag contains 15 one rupee coins, 25 two rupee coins and 10 five rupee coins. If a coin is selected at random from the bag, then the probability of not selecting a one rupee coin is

A. 0.30
B. 0.70
C. 0.25
D. 0.20
E. None

16. Two letters are drawn from the word ‘HOME’. Find the chance that one of the letters chosen is ‘H’

A. 1/6
B. 2/4
C. 1/4
D. 4/6
E. None

17. A bag contains 6 white and 5 black balls. One ball is drawn. The probability that the ball is white:

A. 5/11
B. 1
C. 6/11
D. 1/11
E. None

18. An urn contains 9 balls of which 2 are red, three blue and four black. Three balls are drawn at random. The probability that they are of same colour is:

A. 3/27
B. 20/31
C. 5/84
D. 6/26
E. None

19. Two balls are drawn from a bag containing 5 white and 7 black balls at random. What is the probability that they would be of different colours?

A. 35/66
B. 30/ 66
C. 12/66
D. 6/66
E. None

20. 5 boys & 5 girls sit in a row at random. The probability that girls come together is __

A. 1/84
B. 1/32
C. 1/90
D. 1/42
E. None

Explanation for Question1:

Explanation for Question2:

Explanation for Question3:

Explanation for Question 4:

Explanation for Question 5: