Subjects
Maths TNSB Mentoring
Class 9
Real Numbers
Surds and its Basic Operations I

4. Multiple choice questions II

Question:

3 m.

1. If \(\sqrt{80} = k \sqrt{5}\), then \(k =\)

\(8\)
\(2\)
\(4\)
\(16\)

2. \(4\sqrt{7} \times 2\sqrt{3}\) \(=\)

\(8 \sqrt{21}\)
\(8 \sqrt{10}\)
\(6 \sqrt{10}\)
\(6 \sqrt{21}\)

3. When written with a rational denominator, the expression

\frac{2 \sqrt{3}}{3 \sqrt{2}}

can be simplified as

$\frac{2}{3}$
$\frac{\sqrt{6}}{3}$
$\frac{\sqrt{3}}{2}$
$\frac{\sqrt{2}}{3}$

Login or Fast registration

Exit to the topic

Did you find an error?

Copyright © 2025 YaClass Tech Private Limited Contacts Terms and Conditions Privacy Policy