Hi,
Could anyone please tell me if there is any formula or method to find the number of digits in the result of multiplication of 2 numbers?
For e.g. if a 12 digit number is multiplied by a 16 digit no. then how many digits will be there in the result?
Thanks.
The line between m+n and m+n-1 digits is clear in most cases, depending on the first digits.
If the first digits are:
1 and anything 1-4
2 and 2
Then there will be m+n-1 digits.
If the first digits are:
1 and anything 5-9
2 and 3
2 and 4
3 and 3
Then it could be either m+n or m+n-1 digits, depending on later digits.
If the first digits are anything else,
Then there are m+n digits.