www.easytutorial.in
Easy Tutorial
1. 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:
$ \dfrac{21}{46} $ | $ \dfrac{25}{117} $ | $ \dfrac{1}{50} $ | $ \dfrac{3}{25} $ |
2. 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?
$ \dfrac{1}{2} $ | $ \dfrac{2}{5} $ | $ \dfrac{8}{15} $ | $ \dfrac{9}{20} $ |
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?
$ \dfrac{10}{21} $ | $ \dfrac{11}{21} $ | $ \dfrac{2}{7} $ | $ \dfrac{5}{7} $ |
4. What is the probability of getting a sum 9 from two throws of a dice?
$ \dfrac{1}{6} $ | $ \dfrac{1}{8} $ | $ \dfrac{1}{9} $ | $ \dfrac{1}{12} $ |
5. Two cards are drawn together at random from a pack of 52 cards. What is the probability of both the cards being Queens?
1/52 | 1/221 | 2/221 | 1/26 |
6. Three unbiased coins are tossed. What is the probability of getting at most two heads?
$ \dfrac{3}{4} $ | $ \dfrac{1}{4} $ | $ \dfrac{3}{8} $ | $ \dfrac{7}{8} $ |
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:
$ \dfrac{1}{22} $ | $ \dfrac{3}{22} $ | $ \dfrac{2}{91} $ | $ \dfrac{2}{77} $ |
8. Two cards are drawn together from a pack of 52 cards. The probability that one is a club and one is a diamond?
13/51 | 1/52 | 13/102 | 1/26 |
9. 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?
3/5 | None of these | 2/5 | 1/5 |
*Click on the QNo to display a Question.
Total | Ans | ||
Pipes | Prev | Next | Permutations |