Question

FIND THE LCM OF 4!,5!,6! (permutations and combinations) answer quickly

Answer 1

$$\begin{gathered} 4!=4! \\ 5!=5\times 4! \\ 6!=6\times 5\times 4! \\ \mathrm{LCM}\left(4!,5!,6!\right)=6\times 5\times 4!=6!\mathrm{ANS}... \end{gathered}$$