# Verify the following

• May 5th 2012, 08:36 PM
Verify the following
could someone please give me some hints about how to prove this?

• May 6th 2012, 08:42 AM
Re: Verify the following
sorry, i thought it worked when i previewed ... i'm not sure how to put it in code, but here's a picture
Attachment 23794
• May 7th 2012, 12:55 PM
Re: Verify the following
any help would be much appreciated
• May 9th 2012, 03:34 PM
Re: Verify the following
not a single person can help?
• May 9th 2012, 03:59 PM
Plato
Re: Verify the following
Quote:

not a single person can help?

Suppose that $a,~b,~\&~c$ are positive integers such that $a>b$.
Further, suppose that we have $a$ blue balls and $c+b$ red balls.
Now we put the balls all together in a box from which we randomly choose $b$ balls.
Surely you can see that we can choose from $0\text{ to }b$ blue balls.
That is all that summation says.
• May 9th 2012, 04:55 PM