Logarithms Practice Test 1

© examsiri.com

Question : 20 of 40

Marks: +1, -0

If

\log_3 x+2\log_9x+3\log_27x=12

then x is:

81
36
64
None of these
Undefined

Solution:

\log_3 x+2\log_9x+3\log_27x=12

\log_3 x+ \log_3x+ \log_3x=12

3\log_3x=12

\log_3x=4

x=3^4=81

© examsiri.com

Go to Question:

Prev Question

Next Question