Subject
Quantitative Aptitude
Topic
Ratio
if ,110:1a=1a:11,then value of a is
if ,110:1a=1a:11,then value of a is
ক)
\(\sqrt 5\)খ)
\(\sqrt {10}\)গ)
\(2\sqrt 3\)ঘ)
5ঙ)
10Explanation
Given that, \eqalign{ & {{{1 \over {10}}} \over {{1 \over a}}} = {{{1 \over a}} \over 1} \cr & \Rightarrow {a \over {10}} = {1 \over a} \cr & \Rightarrow {a^2} = 10 \cr & \Rightarrow a = \sqrt {10} \cr}Related questions
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