Exercise 6.1 (Systematic Listing)

Exercise 6.1

1.  What are the possible ways to write three digit number without repeating these numbers?

792, 729, 297, 279, 927

2. In a hotel, you have to choose a tiffin and a drink. Here is the list.

List the possible combinations systematically.

1. Idly & Tea

2. Idly & Coffee

3. Idly & Milk

4. Poori & Tea

5. Poori & Coffee

6. Poori & Milk

7. Dosai & Tea

8. Dosai & Coffee

9. Dosai & Milk

10. Pongal & Tea

11. Pongal & Coffee

12. Pongal & Milk

3. Kavin has four cards 

9 7 4 6

a. List down all 3−digit numbers possible with these cards (without repetition).

974, 947, 794, 749, 479, 497, 746, 764, 476, 467, 674, 647, 496, 469, 649, 694, 946, 964,

b. What is the largest 4−digit odd number that can be made without repeating the numbers?

9753

4. There are 6 sprinters (an athlete who runs fast in short race). In how many different ways 3 medals (Gold, silver and bronze) be allocated?

1) Gold, Silver, Bronze

2) Gold, Bronze, Silver

3) Silver, Gold, Bronze

4) Silver, Bronze, Gold

5) Bronze, Gold, Silver

6) Bronze, Silver, Gold