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If $$\sqrt 5 = 2.236{\text{,}}$$   then the value of $$\frac{1}{{\sqrt 5 }}$$  is = ?

A. 0.367

B. 0.447

C. 0.745

D. None of these

Answer: Option B

Solution(By Examveda Team)

$$\eqalign{ & = \frac{1}{{\sqrt 5 }} \cr & = \frac{1}{{\sqrt 5 }} \times \frac{{\sqrt 5 }}{{\sqrt 5 }} \cr & = \frac{{\sqrt 5 }}{5} \cr & = \frac{{2.236}}{5} \cr & = 0.447 \cr} $$

This Question Belongs to Arithmetic Ability >> Square Root And Cube Root

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