Question

9. The difference between the greatest five digit number and the greatest five digit number with all
different digits is
(a) 1000
(b) 12345
(c) 1
(d) 1234
10. The sum of the smallest 4-digit number and the greatest 4-digit number using only one digit is
(a) 10999
(b) 10000
(c) 11110
(d) 11011
Challenge!​

Answer 1

Answer:

10) Smallest 4 digit is 1000

Greatest 4 digit no. using only 1 digit is 9999

1000+9999= 10,999

Option (a) 10,999 is the correct answer