Examveda
Examveda

If $${\left( {\sqrt 5 } \right)^7} \div {\left( {\sqrt 5 } \right)^5} = {{\text{5}}^{\text{P}}}{\text{,}}$$     then the value of P is?

A. 5

B. 2

C. $$\frac{3}{2}$$

D. 1

Answer: Option D

Solution(By Examveda Team)

$$\eqalign{ & {\left( {\sqrt 5 } \right)^7} \div {\left( {\sqrt 5 } \right)^5}{\text{ = }}{{\text{5}}^{\text{P}}} \cr & \Rightarrow \frac{{{{\left( {\sqrt 5 } \right)}^7}}}{{{{\left( {\sqrt 5 } \right)}^5}}} = {{\text{5}}^{\text{P}}} \cr & \Rightarrow {\left( {\sqrt 5 } \right)^2} = {{\text{5}}^{\text{P}}} \cr & \Rightarrow {{\text{5}}^{\text{1}}} = {\text{ }}{{\text{5}}^{\text{P}}} \cr & \Rightarrow \boxed{{\text{P}} = 1} \cr} $$

This Question Belongs to Arithmetic Ability >> Algebra

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