CBSE 11 Math · U2
Algebra
Complex numbers, linear inequalities, permutations and combinations, binomial theorem, and sequences and series from the CBSE Class 11 Mathematics syllabus.
Test yourself
A focused, distraction-free run through 25 multiple-choice questions. Hints if you need them; your score at the end.
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Topic 2.1
Complex Numbers and Quadratic Motivation
Algebraic form, operations, conjugates, and Argand-plane interpretation
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Topic 2.2
Linear Inequalities in One Variable
Algebraic solutions and number-line representation
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Topic 2.3
Permutations and Combinations
Counting principles, factorials, arrangements, selections, and simple applications
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Topic 2.4
Binomial Theorem
Positive integral powers, Pascal triangle, and simple expansions
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Topic 2.5
Sequences and Series
Sequences, GP terms and sums, infinite GP, AM, GM, and AM-GM relation
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