Aptitude : : Logarithms Questions & Answers

  1. Find logb a x logc b x loga c

A. 1

B. 5

C. 0

D. -1

  1. If log(64) = 1.806, log(16) = ?

A. 0.903

B. 1.806

C. 1.908

D. 1.204

  1. If $ \log \left(\dfrac{\text{a}}{\text{b}}\right) + \log\left (\dfrac{\text{b}}{\text{a}}\right)$ = $ \log(\text{a}+\text{b}) $, then

A. a + b = 1

B. a = b

C. a - b = 1

D. a2 + b2 = 1

  1. $ \dfrac{1}{\log_{2}{48}} + \dfrac{1}{\log_{4}{48}} + \dfrac{1}{\log_{6}{48}} $ = ?

A. -1

B. 1

C. 0

D. 2

  1. If logx$\left(\dfrac{9}{4}\right)$ = $\dfrac{-1}{2}$, then find the value of x?

A. $ \dfrac{16}{81}$

B. $ \dfrac{16}{9}$

C. $ \dfrac{81}{16}$

D. $ \dfrac{9}{16}$