Question

$\sqrt{0.0169\times ?}=1.3$

• A. 10
• B. 100
• C. 1000
• D. None of these

Answer 1

Answer: (B)

100

Let $\sqrt{0.0169\times x}=1.3$
Then, $0.0169x=(1.3{)}^2=1.69$
$\Rightarrow x=\frac{1.69}{0.0169}=100$