Question

22. Write the greatest and the smallest 4-digit numbers using four different digits
with the conditions as given:
(i) Digit 7 is always at units place.
(ii) Digit 4 is always at tens place.
(iii) Digit 9 is always at hundreds place.
(iv) Digit 2 is always at thousands place.​

Answer 1

1. 7 777
2. 4444
3. 999999
4. 200000