# Aptitude  Permutations and Combinations  Practice Q&A-Easy

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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