ABC26GN2068 · Logarithms

Subject: General Aptitude · Chapter: Logarithms · Exam: · Marks: · Difficulty:

The value of $\left(\frac{1}{\log _{3} 60}+\frac{1}{\log _{4} 60}+\frac{1}{\log _{5} 60}\right)$ is
(a)0
(b)1
(c)5
(d)60
Answer
Answer (as printed): B
Explanation
Given expression $$\begin{aligned} & =\log _{60} 3+\log _{60} 4+\log _{60} 5=\log _{60}(3 \times 4 \times 5) \\ & =\log _{60} 60=1 . \end{aligned}$$

Explanation as extracted from the printed page; notation may be imperfect.

Open in whiteboard · Browse this chapter in the app