Class 9 · ICSE · Mathematics

Logarithms

Definition of a logarithm, the laws of logarithms, and their use in computation.

Topics in this chapter

Narrow to a single topic to practise one idea at a time.

12 questions in this chapter.

Answer available
Class 9 · Mathematics · Logarithms
log a + log b is equal to:
1 markMediumMCQ
Answer available
Class 9 · Mathematics · Logarithms
If log 2 = 0.3010 and log 3 = 0.4771, find log 12.
3 marksMediumNumerical
Answer available
Class 9 · Mathematics · Logarithms
Evaluate log₃ 27 + log₅ 1.
2 marksEasyNumerical
Answer available
Class 9 · Mathematics · Logarithms
Solve for x: log₂ x + log₂ (x − 2) = 3.
3 marksMediumNumerical
Answer available
Class 9 · Mathematics · Logarithms
The value of log₁₀ 1 is:
1 markEasyMCQ
Answer available
Class 9 · Mathematics · Logarithms
Express log(a²b³/c) in terms of log a, log b and log c.
3 marksMediumNumerical
Answer available
Class 9 · Mathematics · Logarithms
State the three laws of logarithms.
3 marksMediumShort answer
Answer available
Class 9 · Mathematics · Logarithms
Simplify log 2 + log 5 to base 10.
3 marksMediumNumerical
Answer available
Class 9 · Mathematics · Logarithms
Evaluate log₂ 8.
2 marksEasyNumerical
Answer available
Class 9 · Mathematics · Logarithms
Solve for x: log₃(x + 1) = 2.
3 marksMediumNumerical
Answer available
Class 9 · Mathematics · Logarithms
If log₁₀ x = 2, find x.
3 marksMediumNumerical
Answer available
Class 9 · Mathematics · Logarithms
If log 2 = 0.3010 and log 3 = 0.4771, find the value of log 12.
3 marksMediumNumerical