# How do you find the binomial coefficient of ((100), (98))?

$4950$
We use ${\text{^nC_r = }}^{n} {C}_{n - r}$ to write
$\left(\begin{matrix}100 \\ 98\end{matrix}\right) = \left(\begin{matrix}100 \\ 2\end{matrix}\right) = \frac{100 \times 99}{1 \times 2} = 4950$