Practice is the only way to Success in any exams - By Learners World

Month wise posts

Tuesday, 13 December 2016

Probability -02 (RBI / IBPS)


1. A bag contains 2 yellow, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?

2. A die is rolled twice. What is the probability of getting a sum equal to 9?

3. Three coins are tossed. What is the probability of getting at most two tails?

4. When tossing two coins once, what is the probability of heads on both the coins?

5. What is the probability of getting a number less than 4 when a die is rolled?

6. A bag contains 4 black, 5 yellow and 6 green balls. Three balls are drawn at random from the bag. What is the probability that all of them are yellow?

7. One card is randomly drawn from a pack of 52 cards. What is the probability that the card drawn is a face card(Jack, Queen or King)

8. A dice is thrown. What is the probability that the number shown in the dice is divisible by 3?

9. John draws a card from a pack of cards. What is the probability that the card drawn is a card of black suit?

11. What is the probability of selecting a prime number from 1,2,3,... 10 ?

12. 3 balls are drawn randomly from a bag contains 3 black, 5 red and 4 blue balls. What is the probability that the balls drawn contain balls of different colors?

13. 5 coins are tossed together. What is the probability of getting exactly 2 heads?

14. What is the probability of drawing a "Queen" from a deck of 52 cards?

15. A card is randomly drawn from a deck of 52 cards. What is the probability getting an Ace or King or Queen?

16. A card is randomly drawn from a deck of 52 cards. What is the probability getting a five of Spade or Club?

17. When two dice are rolled, what is the probability that the sum is either 7 or 11?
18. A card is randomly drawn from a deck of 52 cards. What is the probability getting either a King or a Diamond?

19. John and Dani go for an interview for two vacancies. The probability for the selection of John is 1/3 and whereas the probability for the selection of Dani is 1/5. What is the probability that none of them are selected?

20. John and Dani go for an interview for two vacancies. The probability for the selection of John is 1/3 and whereas the probability for the selection of Dani is 1/5. What is the probability that only one of them is selected?

21. A letter is randomly taken from English alphabets. What is the probability that the letter selected is not a vowel?

22. The probability A getting a job is 1/5 and that of B is 1/7 . What is the probability that only one of them gets a job?

23. A letter is chosen at random from the word 'ASSASSINATION'. What is the probability that it is a vowel?

24. A letter is chosen at random from the word 'ASSASSINATION'. What is the probability that it is a consonant?


25. 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?

No comments:

Post a Comment