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Chapter 7 of 26
Syllabus

Arithmetic Progressions — Syllabus

NIOS · Class 10 · Maths

What Arithmetic Progressions covers in NIOS Class 10 Maths: 4 topics, for the 2026-27 session. Part of the NIOS Class 10 Maths syllabus.

29 questions25 flashcards6 formulas & key relations5 concepts

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An illustration showing various real-world examples of number patterns, such as petals of a flower, holes in a honeycomb, spirals on a pineapple, and a simple bar chart showing increasing bank deposit
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4 Topics · NIOS Class 10 Maths · 2026-27

Topics in Arithmetic Progressions

1

1. Identifying an Arithmetic Progression

  • An AP has a fixed difference between consecutive terms.
  • The standard form is a, a + d, a + 2d, a + 3d, ...
  • The common difference is found by subtracting consecutive terms.
2

2. General Term of an AP

  • The nth term gives any term of the AP directly.
  • The general term is useful when the term number is known.
  • The formula works for any positive integer n.
3

3. Finding Unknown Terms, a, or d

  • If a and one term are known, d can be found.
  • If d and one term are known, a can be found.
  • If two terms are known, form two equations using t_n = a + (n - 1)d.
4

4. Sum of First n Terms

  • The sum of an AP is found much faster by formula than by adding all terms one by one.
  • Gauss’s pairing method leads to the sum formula.
  • The formula can be written using a and d, or using the last term l, or using t_n.

Key Concepts

Central concept: Arithmetic Progression

DefinitionFirst termCommon differenceStandard formNth termSum of first n termsFinite APNumber patterns

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Frequently Asked Questions

What are the important topics in Arithmetic Progressions for NIOS Class 10 Maths?
Key topics in Arithmetic Progressions include Identifying an Arithmetic Progression, General Term of an AP, Finding Unknown Terms, a, or d, Sum of First n Terms. Study these first, then practise questions on each for the NIOS Class 10 board exam.
How should I revise Arithmetic Progressions for the NIOS Class 10 board exam?
Learn the core ideas first, then work through the 29 practice questions on Arithmetic Progressions. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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