Page 184 - New Medley 2 Semester 1

EXERCISE 1.20

Write the following in descending order.

1. 462, 959, 426 , ,

2. 679, 429, 519 , ,

3. 531, 235, 435, 131 , , ,

4. 436, 849, 748, 851 , , ,

5. 526, 839, 848, 351 , , ,

6. 672, 262, 437, 456, 863 , , , ,

7. 750, 339, 847, 149, 643 , , , ,

8. 312, 532, 693, 340, 659 , , , ,

Greatest and Smallest Numbers with Given Digits

Example 1: Make the largest and smallest three digit number
by using digits 1, 8 and 3. Repetition of digits is not

allowed.
Solution:

Let us first write the largest Now let us write the smallest number.

number.

We will first find the digit in the We will first find the digit in the

hundreds place. hundreds place.
We know that 8 is greater than 3 We know that 1 is smaller than 3
and 1 both, so digit in hundreds and 8 both, so digit in hundreds
place is 8. place is 1.

H T O H T O

8 1

Now we are left with 1 and 3. Now we are left with 3 and 8.

We know that 3 is greater than We know that 3 is smaller than 8,

1, so digit in tens place is 3. so digit in tens place is 3.

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