Question Number 65866 by Sayantan chakraborty last updated on 05/Aug/19
Commented by Sayantan chakraborty last updated on 05/Aug/19
$${please}\:{help}.{Urgent}\:{need}. \\ $$
Commented by Sayantan chakraborty last updated on 05/Aug/19
$$\mathrm{please}\:\mathrm{solve} \\ $$
Commented by Prithwish sen last updated on 05/Aug/19
$$\mathrm{Put}\:\underset{\mathrm{k}=\mathrm{0}} {\overset{\mathrm{p}} {\sum}}\left(^{\mathrm{n}} \mathrm{C}_{\mathrm{k}} \right)\left(^{\mathrm{m}} \mathrm{C}_{\mathrm{p}−\mathrm{k}} \right)=^{\mathrm{n}+\mathrm{m}} \mathrm{C}_{\mathrm{p}} \\ $$
Commented by Sayantan chakraborty last updated on 05/Aug/19
$$\mathrm{what}\:\mathrm{is}\:\mathrm{the}\:\mathrm{proof}\:\mathrm{of}\:\mathrm{above}\:\mathrm{result}? \\ $$
Commented by Sayantan chakraborty last updated on 05/Aug/19
$$\mathrm{answer}\:\mathrm{is}\:\mathrm{not}\:\mathrm{matching}. \\ $$