CAT Logarithm Questions are a regular feature in the exam paper. They appear in Quantitative Aptitude section and often quick to do. There are usually 1-2 Logarithm questions in the CAT question paper every year. CAT 2026 aspirants must study Hidden Quadratic Substitutions, Base Change Rule, Logarithmic Inequalities & Domain Constraints, Telescoping Series Loops, Character Mapping and Domain Restrictions and Inequality Intercepts, to master this topic of exam.
Find Logarithm-based problems with solutions and shortcuts.
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Practice a good number of questions of easy, medium and hard difficulty level. Check below a few CAT Logarithm Questions for practice. Also find CAT Logarithm guide book PDF for free download.
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Sample CAT Logarithm Questions with Solutions
Question 1. Calculate: log 2(32)
(A) 4
(B) 5
(C) 6
(D) 3
Question 2. Solve for x (x > 1): log(x−1) + log(x+1) = log 3
(A) x = 1.5
(B) x = 2
(C) x = 2.5
(D) x = 3
Question 3. Solve for x: log2(x) + log4(x) + log8(x) = 11
(A) x = 32
(B) x = 64
(C) x = 128
(D) x = 256
Question 4. Using log 5 = 0.6990, find the number of digits in 515.
(A) 10
(B) 11
(C) 12
(D) 9
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Anything you would want to ask experts?Answered 17 hours ago
Candidates should spend no more than 1.5 to 2 minutes on an Odd One Out question.
Contributor-Level 10
Answered 17 hours ago
Many top scorers spend the first 8-10 minutes tackling independent VA questions, including Odd One Out and Para Summary, before settling into long RC passages.
Candidates preparing for CAT must devise a exam day plan based on how they perform during mocks.
V
Contributor-Level 7
Answered 17 hours ago
In most of the recent CAT exam sessions, Odd One Out questions have appeared as TITA (Type In The Answer) questions with no negative marking.
L
Contributor-Level 7
Answered 21 hours ago
Candidates can refer to How to Prepare for Logical Reasoning for CAT by Arun Sharma and DI & LR for CAT by Nishit K. Sinha.
P
Contributor-Level 10
Answered 21 hours ago
Yes, Caselets are important for CAT DILR. They help develop skills in interpreting data, identifying relationships and solving logical problems.
P
Contributor-Level 10
Answered 21 hours ago
CAT does not have a fixed number of questions from Caselets. Usually, one Caselet-based set with 4-5 questions may appear in the DILR section.
P
Contributor-Level 10
Answered 21 hours ago
Candidates can refer to High School English Grammar and Composition by Wren and Martin. CAT previous-year questions, grammar exercises and mock tests are also useful.
P
Contributor-Level 10
Answered 21 hours ago
Yes, understanding Parts of Speech helps candidates improve grammar, sentence correction, para completion and overall Verbal Ability skills.
P
Contributor-Level 10
Answered 21 hours ago
CAT does not have a fixed number of questions from Parts of Speech. The topic is usually tested indirectly through grammar and Verbal Ability questions.
P
Contributor-Level 10
Answered 22 hours ago
Choose a coaching institute that will minimise daily travel time, as daily traffic across major corridors can cause commute fatigue. Centres near metro stations (such as Central, Park Street, or Salt Lake Sector V) are usually the easiest to reach.
R
Contributor-Level 7
4.6
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How much time should I spend on an Odd One Out question on CAT exam day?