High-Weightage JEE Main 2026 Problems on Matrices, Determinants, and Vectors

Aiming for a high score in JEE Main Mathematics paper? Then you must focus on the chapters on Matrices, Determinants and Vectors, as these contribute to a whopping 6-8% weighatge. Every year, NTA sets at least 2-3 questions from these high-weightage topics, which means you get a chance to score 8-12 marks easily. JEE Main 2026 Matrices, Determinants, and Vectors problems with fully solved sets can help you take your preparation level a notch up. Once you have covered the syllabus, dedicate the last two months to solving JEE Main 2026 Matrices practice questions, understand the question pattern (whether or not these are recurring), and evaluate your performance as a whole.
Get JEE Main 2026 Matrices, Determinants and Vectors solved question sets PDF from this page.
Also Check - JEE Main 2026 Mathematics: High-Weightage Chapters Often Ignored by Students

JEE Main 2026 Matrices, Determinants, and Vectors Practice Questions with Solutions

Check out the JEE Main Matrices, Determinants, and Vectors 2026 questions and solutions PDF from below:
Q1. Baye’s theorem is used for finding:

A) Independent probability

B) Total probability

C) Conditional probability

D) Classical probability

Answer: Conditional probability
Q2. A random variable that can take only finite or countable number of values is called:

A) Continuous random variable

B) Discrete random variable

C) Constant variable

D) Dependent variable

Answer: Discrete random variable
Q3. If two events are mutually exclusive, their intersection probability is:

A) 0

B) 11

C) ½

D) Depends on the events

Answer: 0
Q4. A square matrix A is called a diagonal matrix if:

A) All elements are zero

B) All non-diagonal elements are zero

C) All diagonal elements are equal

D) All elements are 1

Answer: All non-diagonal elements are zero

Q5. A matrix having only one row is called:

A) Square matrix

B) Column Matrix

C) Row matrix

D) Null matrix

Answer: Row matrix
Also Check - JEE Main 2026: List of Chapters & Topics Covered Under Mathematics Section

JEE Main 2026 Matrices, Determinants, and Vectors Sample Questions and Solutions PDF

Check out more questions on JEE Main 2026 Matrices, Determinants, and Vectors questions and solutions from the PDF given below:

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JEE Main Matrices, Determinants and Vectors Weightage Trends 2026

Preparing from the important section helps in scoring good marks in the JEE Main exam. Overall, the topic matrices, determinants and vectors contribute to 15-22% of the JEE Main Maths section. Check out the section-wise weightage, marks and frequently asked topics below:

• JEE Main Matrices Weightage : The questions asked from the JEE Main Matrices section are 1-2 questions. And the marks it carries are 4-8 marks. The frequently asked topics are matrix operations, types of matrices, systems of linear equations using matrices, inverse using elementary transformations etc.

• JEE Main Determinants Weightage : Normally, 1-2 questions are asked from the JEE Main Determinants section. The marks allocated range between 4-8 marks. The frequently asked topics are properties of determinants, cofactor and adjoint, solving equations using Cramer’s rule, area of triangles with determinants etc.

• JEE Main Vectors and 3D Geometry Weightage: As per the JEE Main Maths exam pattern, the questions asked from JEE Main Vectors and 3D Geometry are 3-4 questions. The marks range from 12-16. The topics from which the questions are asked are Dot and Cross product, vector equations of lines, scalar triple product, angle, distance, coplanarity, 3D geometry applications etc. This is an important section in the JEE Main 2026 Maths section.

Apart from the sample questions provided above, we strongly suggest students to take CollegeDekho's JEE Main Mathematics practice questions with solutions for a more detailed and comprehensive analysis. Attempt mock papers and check the correct answer instantly with step-by-step solutions.

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