Answer:
7 digits
Explanation:
When we multiply a two digit number like 17 by another 2 digit
The highest number of digits we can get as answer is 4 digits
This can be seen in the case of 10 * 10
So what this mean is that at any point in time, we can sum the numbers to get the digits
3 + 4 will give 7
And that is the greatest number we can get