حاصل عبارتهای روبرو به ترتیب از بالا به پایین برابر با کدام گزینه میباشد؟
$\begin{gathered}
{\left( {\frac{2}{5}} \right)^3} \times {\left( {\frac{2}{5}} \right)^4} \hfill \\
{\left( {\frac{2}{5}} \right)^3} \times {\left( {\frac{5}{2}} \right)^3} \hfill \\
\end{gathered} $
$\begin{gathered}
{\left( {\frac{2}{5}} \right)^7} \hfill \\
1 \hfill \\
\end{gathered} $
2 )
$\begin{gathered}
{\left( {\frac{2}{5}} \right)^{12}} \hfill \\
{\left( {\frac{2}{5}} \right)^6} \hfill \\
\end{gathered} $
3 )
$\begin{gathered}
{\left( {\frac{2}{5}} \right)^7} \hfill \\
{\left( {\frac{2}{5}} \right)^6} \hfill \\
\end{gathered} $
4 )
$\begin{gathered}
{\left( {\frac{2}{5}} \right)^{12}} \hfill \\
1 \hfill \\
\end{gathered} $