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1. A box contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the box, if at least one black ball is to be included in the draw?
| 32 | 48 | 64 | 96 |
2. How many 3-digit numbers can be formed from the digits 2, 3, 5, 6, 7 and 9, which are divisible by 5 and none of the digits is repeated?
| 5 | 10 | 15 | 20 |
3. In how many ways can the letters of the word LEADER be arranged?
| 72 | 144 | 360 | 720 |
4. How many 6 digit telephone numbers can be formed if each number starts with 35 and no digit appears more than once?
| 720 | 360 | 1420 | 1680 |
5. An event manager has ten patterns of chairs and eight patterns of tables. In how many ways can he make a pair of table and chair?
| 100 | 80 | 110 | 64 |
6. How many 4-letter words with or without meaning, can be formed out of the letters of the word, LOGARITHMS, if repetition of letters is not allowed?
| 40 | 400 | 5040 | 2520 |
7. A box contains 4 red, 3 white and 2 blue balls. Three balls are drawn at random. Find out the number of ways of selecting the balls of different colours?
| 62 | 48 | 12 | 24 |
8. 25 buses are running between two places P and Q. In how many ways can a person go from P to Q and return by a different bus?
| None of these | 600 | 576 | 625 |
9. In how many ways a committee, consisting of 5 men and 6 women can be formed from 8 men and 10 women?
| 266 | 5040 | 11760 | 86400 |
10. Find out the number of ways in which 6 rings of different types can be worn in 3 fingers?
| 120 | 720 | 125 | 729 |
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