question_answer

Make the greatest and the smallest four-digits numbers using any four different digits, with conditions as given:

(a)	Digit 7 is always at	Greatest	9	8	6	7
	Ones place	Smallest	1	0	2	7
(b)	Digit 4 is always a t	Greatest			4
	Tens place	Smallest			4
(c)	Digit 9 is always at	Greatest		9
	Hundreds place	Smallest		9
(d)	Digit 1 is always at	Greatest	1
	Thousand place	Smallest	1

Answer:

We know that digit written in descending order are 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 (a) According to question, digit 7 is always at ones place

9

8

6

7

Greatest Number is

1

0

2

7

Smallest Number is (b) According to question, digit 4 is always at tens place

9

8

4

7

Greatest Number is

1

0

4

2

Smallest Number is  (c) According to question, digit 9 is always at hundred place

8

9

7

6

Greatest Number is 

1

9

0

2

Smallest Number is (d) According to question, digit 1 is always at thousand place

1

9

8

7

Greatest Number is

1

0

2

3

Smallest Number is