Question

Which among the following is a natural number ?

• A. $$\sqrt{2\frac{1}{2}}\times \sqrt{3\frac{1}{2}}$$
• B. $$\sqrt{7\frac{1}{2}}\times \sqrt{3\frac{1}{3}}$$
• C. $$\sqrt{2\frac{1}{2}}\times \sqrt{4\frac{1}{4}}$$
• D. $$\sqrt{5\frac{1}{5}}\times \sqrt{4\frac{1}{4}}$$

Answer 1

Answer:

$$\sqrt{7\frac{1}{2}}\times \sqrt{3\frac{1}{3}}$$

$\sqrt{\frac{15}{2}\times\frac{10}{3}}=\sqrt{\frac{150}{6}}=\sqrt{25}=5$