Addition and multiplication of two numbers.

Question

At this point I have to find out the maximum number of digits I can get when I multiply 2 numbers with m and n digits. I am not able to find the generalized solution for multiplication and addition. There might exist a very simple formula but I couldn't any. I googled but couldn't find any relevant topic I may have searched with wrong keyword.

Thanks In Advance

Dibya

score 1 · Accepted Answer · answered Mar 26 '13 at 02:35

1

Hint: what is the largest number with $m$ digits? It is just less than a power of $10$. Express it that way and multiply it by the largest number with $n$ digits. You might try $m=2, n=3$ with your calculator to see what is going on.

answered Mar 26 '13 at 02:35

Ross Millikan

374,822

Yes I got it. Thanks – NewUser Mar 26 '13 at 02:37
I got a pattern for multiplication. It is M+N but couldn't find one for addition. Can you please help me here? – NewUser Mar 26 '13 at 02:43
When you add two numbers, the most you can carry is $1$ – Ross Millikan Mar 26 '13 at 02:52

Addition and multiplication of two numbers.

1 Answers1