Question

18. Write the greatest 4-digit number having distinct digits.
19. Write the smallest 4-digit number having distinct digits.
20. Write the greatest 6-digit number using three different digits.
21. Write the smallest 7-digit number using four different digits.
1.1. 11aat 1 dicit numbers using four different dicite
Uni
Dif​

Answer 1

Answer:

1000

9999

100000

9999999

Answer 2

Answer:

18. 9,876

19. 1,234

20. 9,98,877

21. 10,00,023