# find the minimum and maximum number of digits in the sum of any two 4 digit numbers

The largest four digit number is 9999, and thus, a maximum value can be obtained by adding 9999 and 9999, and the resultant number will be having the maximum number of digits.

Therefore, the maximum number of digits of the resultant number, when two four-digit numbers are added is 5.

Let us now discuss the minimum:

The smallest four digit number is 1000, and thus, a minimum value can be obtained by adding 1000 and 1000, and the resultant number will be having the minimum number of digits.

Therefore, the minimum number of digits of the resultant number, when two four-digit numbers are added is 4.

Regards

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