Aptitude : : Logarithms Questions & Answers

  1. log 360 is equal to:

A. 3 log 2 + 2 log 3 + log 5

B. 3 log 2 + 2 log 3

C. 2 log 2 + 3 log 3

D. 3 log 2 + 2 log 3 - log 5

  1. If loga (ab) = x, then logb (ab) is:

A. $\dfrac{1}{\text{x}}$

B. $\dfrac{\text{x}}{1+\text{x}}$

C. $\dfrac{\text{x}}{1-\text{x}}$

D. $\dfrac{\text{x}}{\text{x}-1}$

  1. If log8 x + log8 $\dfrac{1}{6}$ = $\dfrac{1}{3}$, then find the value of x?

A. 12

B. 14

C. 16

D. 18

  1. Find the value of $2^{\Large{\left(\log_{2}{5}\right)}}$

A. 5

B. 10

C. 15

D. 0

  1. Find the value of $3^{\Large{\left(2~+~ \log_{3}{5}\right)}} $

A. 50

B. 45

C. 9

D. 10