Question

find the difference between the largest four digit number and largest three digit number. Find the predecessor and successor of the resultant

Answer 1

the ans is 9000. and the predecessor is8999 and the successor is 9001

Answer 2

Largest 4digit no=9999
largest 3 digit number = 999
Now
difference= 9999 - 999 = 9000
therefore the predecessor = 899 line of successor = 9001