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Question 28

If p$$^{3}$$ = q$$^{4}$$ = r$$^{5}$$ = s$$^{6}$$, then the value of $$log_{s}{(pqr)}$$ is equal to

Given that,Β p$$^{3}$$ = q$$^{4}$$ = r$$^{5}$$ = s$$^{6}$$

p$$^{3}$$=s$$^{6}$$

p =Β s$$^{\frac{6}{3}}$$ = s$$^{2}$$Β  Β ...(1)

Similarly,Β q =Β s$$^{\frac{6}{4}}$$ =Β s$$^{\frac{3}{2}}$$Β  Β ...(2)

Similarly, r =Β s$$^{\frac{6}{5}}$$Β  Β ...(3)

$$\Rightarrow$$ $$log_{s}{(pqr)}$$Β 

By substituting value of p, q, and r from equation (1), (2) and (3)Β 

$$\Rightarrow$$ $$log_{s}{(s^{2}*s^{\frac{3}{2}}*s^{\frac{6}{5}})}$$Β 

$$\Rightarrow$$ $$log_{s}(s^{\frac{47}{10}})$$Β 

$$\Rightarrow$$ $$\dfrac{47}{10}$$Β 

Hence, option A is the correct answer.Β 

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