Question

check whether 9n can be divisible by 6 or not

Answer 1

$$\begin{gathered} 9\mathrm{n}=3\times 3\times \mathrm{n} \\ 6=3\times 2 \\ \mathrm{So},9\mathrm{n}\mathrm{is}\mathrm{divisible}\mathrm{by}6.\mathrm{only}\mathrm{when},\mathrm{n}\mathrm{is}\mathrm{the}\mathrm{multiple}\mathrm{of}2. \end{gathered}$$