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Chapter 9 Class 11 Sequences and Series

Solutions of Chapter 9 Sequences and Series of Class 11 NCERT book available free. All exercise questions, examples, miscellaneous are done step by step with detailed explanation for your understanding. 

 

In this Chapter we learn about Sequences

Sequence is any group of numbers with some pattern.

Like 2, 4, 8, 16, 32, 64, 128, 256, ....

Or

1, 2, 3, 4, 5, 6, 7, 8

 

In this chapter we learn

  • What a sequence is - and what is finite, infinite sequence, terms of a sequence
  • What a series is - it is the sum of a sequence
  • Denoting Sum by sigma Σ, and what it means
  • What is an AP (Arithmetic Progression) is, and finding its nth term and sum
  • Inserting AP between two numbers
  • What is Arithmetic Mean (AM), and how to find it
  • What is a GP (Geometric Progression) is, and finding its nth term and sum
  • Inserting GP between two numbers
  • What is Geometric Mean (GM), and how to find it
  • Relationship between AM and GM
  • Sum of special series
  • Finding sum of series when nth term is given
  • Finding sum of series when nth term is not given

 

Check out the solutions below by clicking an exercise, or a topic

Serial order wise

  Ex 9.1
  Ex 9.2
  Ex 9.3
  Ex 9.4
  Examples
  Miscellaneous

Concept wise

  Finding Sequences
  Arithmetic Progression (AP): Formulae based
  Arithmetic Progression (AP): Statement
  Arithmetic Progression (AP): Calculation based/Proofs
  Inserting AP between two numbers
  Arithmetic Mean (AM)
  Geometric Progression(GP): Formulae based
  Geometric Progression(GP): Statement
  Geometric Progression(GP): Calculation based/Proofs
  Inserting GP between two numbers
  Geometric Mean (GM)
  AM and GM (Arithmetic Mean And Geometric mean)
  AP and GP mix questions
  Finding sum from series
  Finding sum from nth number

What's in it?

Solutions of Chapter 9 Sequences and Series of Class 11 NCERT book available free. All exercise questions, examples, miscellaneous are done step by step with detailed explanation for your understanding. 

 

In this Chapter we learn about Sequences

Sequence is any group of numbers with some pattern.

Like 2, 4, 8, 16, 32, 64, 128, 256, ....

Or

1, 2, 3, 4, 5, 6, 7, 8

 

In this chapter we learn

  • What a sequence is - and what is finite, infinite sequence, terms of a sequence
  • What a series is - it is the sum of a sequence
  • Denoting Sum by sigma Σ, and what it means
  • What is an AP (Arithmetic Progression) is, and finding its nth term and sum
  • Inserting AP between two numbers
  • What is Arithmetic Mean (AM), and how to find it
  • What is a GP (Geometric Progression) is, and finding its nth term and sum
  • Inserting GP between two numbers
  • What is Geometric Mean (GM), and how to find it
  • Relationship between AM and GM
  • Sum of special series
  • Finding sum of series when nth term is given
  • Finding sum of series when nth term is not given

 

Check out the solutions below by clicking an exercise, or a topic