11). A committee of 3 members is to be selected o of 3 men and 2 women. What is the probability that the committee has at least one women?
| A). 1 / 10 |
| B). 9 / 20 |
| C). 9 / 10 |
| D). 1 / 20 |
|
12). A basket contains three blue and four red balls. If three balls are drawn at random from the basket, what is the probability that all the three balls are either blue or red?
| A). 1 |
| B). 1 / 7 |
| C). 3 / 14 |
| D). 3 / 28 |
|
13). A urn contains 3 red and 4 green marbles. If three marbles are picked at random, what is the probability that two are green and one is red?
| A). 3 / 7 |
| B). 18 / 35 |
| C). 5 / 14 |
| D). 4 / 21 |
|
14). A number is selected at random from the set {1,2,3,.... 50}. The probability that it is a prime, is
| A). 0.1 |
| B). 0.2 |
| C). 0.3 |
| D). 0.7 |
|
15). A basket contains 4 red, 5 blue and 3 green marbles. If two marbles are drawn at random, what is the probability that both are red?
| A). 3 / 7 |
| B). 1 / 2 |
| C). 2 / 11 |
| D). None of these |
|
16). A basket contains 4 red, 5 blue and 3 green marbles. If three marbles are picked at random, what is the probability that atleast one is blue?
| A). 7 / 12 |
| B). 37 / 44 |
| C). 5 / 12 |
| D). 7 / 44 |
|
17). A basket contains 4 red, 5 blue and 3 green marbles. If three marbles are picked at random, what is the probability that either all are green or all are red?
| A). 7 / 44 |
| B). 7 / 12 |
| C). 5 / 12 |
| D). 1 / 44 |
|
18). A basket contains 3 blue, 2 green and 5 red balls. If three balls are picked at random, what is the probability that atleast one is red?
| A). 1 / 2 |
| B). 7 / 12 |
| C). 11 / 12 |
| D). 1 / 5 |
|
19). A basket contains 3 blue, 2 green and 5 red balls. If four balls are picked at random, what is the probability that two are green and two are blue?
| A). 1 / 18 |
| B). 1 / 70 |
| C). 3 / 5 |
| D). 1 / 2 |
|
20). Three mangoes and three apples are kept in a box. If two fruits are chosen at random, find the probability that one is a mango and the other is an apple.
| A). 2 / 3 |
| B). 3 / 5 |
| C). 1 / 3 |
| D). 1 / 5 |
|
