Question

2.5^1/7×2^2/7×10^6/7

Answer 1

$(\frac{5}{2})^\frac{1}{7} \cdot 2^\frac{2}{7} \cdot 10^\frac{6}{7} = 5^\frac{1}{7} \cdot 2^\frac{1}{7} \cdot 10^\frac{6}{7}=10^\frac{1}{7} \cdot 10^\frac{6}{7} = 10^\frac{7}{7} =10$