Question Number 189112 by moh777 last updated on 12/Mar/23
Commented by mr W last updated on 12/Mar/23
$${when}\:{you}\:{ask}\:{other}\:{people}\:{to}\:{prove}\:{it} \\ $$$${do}\:{you}\:{at}\:{least}\:{think}\:{that}\:{it}\:{could}\:{be} \\ $$$${true}? \\ $$
Commented by moh777 last updated on 12/Mar/23
it's true , you can check that .
Commented by mr W last updated on 12/Mar/23
$${yes},\:{both}\:{sides}\:{equal}\:{to}\:{n}^{{cr}} . \\ $$