Page 190 - New Medley 2 Semester 1

Example 6: Make the greatest and smallest three digit number
by using digits 7, 0 and 2. Repetition of digits is

allowed.
Solution:

Let us first write the greatest Now let us write the smallest
number. number.
We arrange the digits in ascending
We arrange the digits in descending
order.
order.
0, 2 and 7
7, 2 and 0
0 is the smallest, but if we write
7 is the greatest, so we write it 0 in hundreds place, our number

at hundreds place. will become a two digit number.
So 0 cannot be used here. We
H T O
still have the digits 2 and 7.
7 Out of the digits 2 and 7, 2 is

the smaller digit, so we write 2
We still have 7, 2 and 0 as we in hundreds place.
are allowed to repeat.
H T O
We know that 7 is the greatest.
2
We write 7 in tens place also.

H T O We still have 0, 2 and 6.

7 7 We know that 0 is the smallest.
We write 0 in tens place.
We still have 7, 2 and 0 as we
H T O
are allowed to repeat.
2 0
We know that 7 is the greatest.
We write 7 in ones place also. We still have 0, 2 and 7.

H T O We know that 0 is the smallest.

7 7 7 We write 0 in ones place.

H T O

2 0 0

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