# 3. Make the greatest and the smallest 4-digit numbers using any four different digits with conditions as given. (a) Digit 7 is always at one's place                 Greatest - 9 8 6 7               Smallest - 1 0 2 7                    (Note, the number cannot begin with the digit 0. Why?)               (b) Digit 4 is always at tens place                    Greatest - _ _ 4 _                    Smallest - _ _ 4 _ (c) Digit 9 is always at hundreds place                      Greatest - _ 9 _ _                     Smallest - _ 9 _ _ (d) Digit 1 is always at thousands place                      Greatest- 1 _ _ _                      Smallest - 1 _ _ _

(b) Digit 4 is always at tens place
Greatest - 9847
Smallest - 1042

(c) Digit 9 is always at hundreds place
Greatest - 8976
Smallest - 1902

(d) Digit 1 is always at thousands place
Greatest- 1987
Smallest - 1023

A) ans.

greatest = 9867

smallest = 1027

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