Question

EVALUATE ∑5 K=1 K!/K

Answer 1

\[\begin{align*}\sum_{k=1}^5 \frac{k!}{k}&=\frac{1!}{1}+\frac{2!}{2}+\frac{3!}{3}+\frac{4!}{4}+\frac{5!}{5}\\
&=1+1!+2!+3!+4!\\
&=1+1+2+6+24
\end{align*}\]