Forgot password? New user? Sign up

Existing user? Log in

$\displaystyle \sum^{n}_{p=1} \sum^{n}_{m=p} \dbinom{n}{m} \dbinom{m}{p}$

If the value of the above expression is in the form $a^n-b^n$, where $a$ and $b$ are prime numbers, find $a+b$.

Problem Loading...

Note Loading...

Set Loading...