Question

\[\sum_{k=0}^{100}\left(\begin{matrix}100 \\ k\end{matrix}\right)\times5^k\]

Answer 1

it will be a very big number, are you trying to evaluate the sum ?

Answer 2

woah nice :3

Answer 3

\[\large (5+1)^{100} = \sum_{k=0}^{ 100} \binom{100}{k} 5^k 1^{100-k}\]

Answer 4

please medal ikram, not me @amiran321 :)