Question

The value of $\sqrt{\frac{1.21\times 0.9}{1.1\times 0.11}}$ is ........ .

Answer 1

$\sqrt{\frac{1.21\times 0.9}{1.1\times 0.11}}=\sqrt{\frac{1.21\times 0.9}{.121}}=\sqrt{\frac{10\times 0.9}{1}}=\sqrt{9}=3$