Aptitude : : Logarithms Questions & Answers

  1. If ax = bx, then

A. $\dfrac{\log{\text{a}}}{\log{\text{b}}}=\dfrac{\text{y}}{\text{x}}$

B. $\dfrac{\log{\text{a}}}{\log{\text{b}}}=\dfrac{\text{x}}{\text{y}}$

C. $ \log{\dfrac{\text{a}}{\text{b}}}=\dfrac{\text{x}}{\text{y}}$

D. None of these

  1. $ \dfrac{ \log{\sqrt8} }{ \log8 } $ is equal to:

A. $\dfrac{1}{\sqrt{8}}$

B. $\dfrac{1}{4}$

C. $\dfrac{1}{2}$

D. $\dfrac{1}{8}$

  1. Which of the following statements is not correct?

A. log10 10 = 0

B. log (2 + 3) = log (2 x 3)

C. log10 1 = 0

D. log (1 + 2 + 3) = log 1 + log 2 + log 3

  1. If log 27 = 1.431, then the value of of log 9 is:

A. 0.934

B. 0.945

C. 0.954

D. 0.958

  1. (log5 5)(log4 9)(log3 2)

A. 1

B. $\dfrac{3}{2}$

C. 2

D. 5