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Subjects
Mathematics State Board
Class 9
Real Numbers
Surds and its Basic Operations and Scientific Notation
2.
Multiple choice questions II
Exercise condition:
3
m.
1
. If \(\sqrt{80} = k \sqrt{5}\), then \(k =\)
\(16\)
\(2\)
\(4\)
\(8\)
2
. \(4\sqrt{7} \times 2\sqrt{3}\) \(=\)
\(8 \sqrt{21}\)
\(8 \sqrt{10}\)
\(6 \sqrt{21}\)
\(6 \sqrt{10}\)
3
. When written with a rational denominator, the expression
2
3
3
2
can be simplified as
6
3
2
3
2
3
3
2
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