Answer:
10000 is the number which is next to the greatest four digit number i.e. 9999.
Explanation:
- The smallest 4-digit number = 1000
- The greatest 4-digit number = 9999
So,
Adding 1 to greatest 4-digit number i.e. 9999 would bring the number 10000.
i.e. 1 + 9999 = 10000
Note that 10000 is the smallest 5-digit number which is obtained when we add 1 the greatest four digit number (9999).
Therefore, 10000 is the number which is next to the greatest four digit number.