Question Number 94632 by Vishal Sharma last updated on 20/May/20
$$\mathrm{The}\:\mathrm{coefficient}\:\mathrm{of}\:{x}^{{m}} \:\mathrm{and}\:{x}^{{n}} \left({m},\:{n}\:\in\:{N}\right)\:\mathrm{in} \\ $$$$\mathrm{the}\:\mathrm{expansion}\:\mathrm{of}\:\left(\mathrm{1}+{x}\right)^{{m}+{n}} \:\mathrm{are} \\ $$
Commented by mr W last updated on 20/May/20
$${C}_{{m}} ^{{m}+{n}} \:{and}\:{C}_{{n}} ^{{m}+{n}} \\ $$