Question

Please simplify the above question​

Answer 1

$\frac{2 \sqrt{7} \times \sqrt{8} \times 5 \sqrt{3} }{3 \sqrt{3} \times \sqrt{15} \times \sqrt{42} } \\ \\ = \frac{2 \sqrt{7} \times 2 \sqrt{2} \times 5 \sqrt{3} }{3 \sqrt{3} \times \sqrt{3} \times \sqrt{5} \times \sqrt{7} \times \sqrt{3} \times \sqrt{2} } \\ \\ = \frac{4 \times 5}{3 \times \sqrt{3} \times \sqrt{3} \times \sqrt{5} } \\ \\ = \frac{4 \times \sqrt{5} \times \sqrt{5} }{9 \sqrt{5} } \\ \\ = \frac{4 \sqrt{5} }{9}$