حاصل عبارت زير كدام است ؟
$\left[ \sqrt{\frac{75}{48}}\times {{\left( \frac{10}{8} \right)}^{10}} \right]\div {{(1/25)}^{7}}=?$
1 )
${{(0/8)}^{4}}$
2 )
${{(1/25)}^{18}}$
${{\left( \frac{5}{4} \right)}^{4}}$
4 )
${{\left( \frac{4}{5} \right)}^{18}}$