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#1 2012-10-12 01:41:40

juan
Guest

4 digit no.

Two 4-digit numbers are to be formed such that the sum of the number is also a 4-digit number and in no place the addition is with carrying the number of ways of forming the number under above conditions is

#2 2012-10-12 02:01:09

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,431

Re: 4 digit no.

Hi juan;

I am taking it that you mean the sum of the two 4 digit numbers must be a 4 digit number and in no column can there be a carry.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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