brodidit for students
Home / Practice / Class 9 / Mathematics / Logarithms
Logarithms
6 Class 9 Mathematics questions with answers and explanations.
Printable worksheet with answer key
-
What is log to base 10 of 1000?
- 1 10
- 2 2
- 3 4
- 4 3
-
What is log to base 2 of 32?
- 1 4
- 2 6
- 3 16
- 4 5
-
log(a x b) is equal to:
- 1 log a / log b
- 2 log a - log b
- 3 log a x log b
- 4 log a + log b
Show answer
Correct answer: log a + log b
The product rule: the log of a product is the sum of the logs.
-
log(a / b) is equal to:
- 1 log a / log b
- 2 log a x log b
- 3 log a + log b
- 4 log a - log b
Show answer
Correct answer: log a - log b
The quotient rule: the log of a quotient is the difference of the logs.
-
What is the value of log 1, for any base?
- 1 10
- 2 Undefined
- 3 0
- 4 1
-
Express 4^3 = 64 in logarithmic form.
- 1 log 3 to base 4 = 64
- 2 log 4 to base 3 = 64
- 3 log 64 to base 4 = 3
- 4 log 64 to base 3 = 4
Show answer
Correct answer: log 64 to base 4 = 3
a^x = N means log of N to base a is x. So log 64 to base 4 = 3.