Sequences and Series
CBSE · Class 11 · Applied Mathematics
Quick revision notes for Sequences and Series — CBSE Class 11 Applied Mathematics. Key concepts, formulas, and definitions for last-minute revision.
Key Topics to Revise
Basic Concepts - Sequences and Series
- A sequence is an ordered arrangement of numbers following a specific rule
- A finite sequence has countable terms, infinite sequence has uncountable terms
- Terms are denoted as a₁, a₂, a₃, ..., aₙ where aₙ is the general term
Arithmetic Progression (AP)
- Each term (except first) is obtained by adding a constant to the previous term
- Common difference d = aₙ₊₁ - aₙ (constant for all n)
- Can have positive, negative, or zero common difference
Arithmetic Mean (AM)
- AM of two numbers a and b is (a+b)/2
- Single AM between a and b makes a, AM, b an AP
- Can insert multiple AMs between two numbers
Geometric Progression (GP)
- Each term (except first) is obtained by multiplying previous term by a constant
- Common ratio r = aₙ₊₁/aₙ (constant for all n, r ≠ 0)
- Three numbers a, b, c are in GP if b² = ac
Get complete notes with diagrams and examples
Full NotesKey Concepts
Get detailed revision notes for Sequences and Series
Super Tutor gives you interactive content for every chapter of CBSE Class 11 Applied Mathematics — summaries, quizzes, flashcards, and more.
Try Super Tutor — It's FreeFrequently Asked Questions
What are the important topics in Sequences and Series for CBSE Class 11 Applied Mathematics?
Sequences and Series covers several key topics that are frequently asked in CBSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Sequences and Series — CBSE Class 11 Applied Mathematics?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.
Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More Resources for Sequences and Series
Important Questions
Practice with board exam-style questions
Syllabus
What topics to cover
Study Plan
Step-by-step plan to ace this chapter
Flashcards
Quick-fire cards for active recall
Formula Sheet
All formulas in one place
Chapter Summary
Understand the chapter at a glance
Practice Quiz
Test yourself with a quick quiz
Concept Maps
See how topics connect visually