Class 9 NCERT • Ganita Manjari Part I (New Syllabus)
Ch 08: Predicting What Comes Next — Sequences & Progressions
Select a topic or study module below to explore sequence rules, explicit and recursive formulas, arithmetic and geometric progressions, Fibonacci and triangular patterns, real-life growth models, and textbook exercises.
Topic 01 • Intro to Sequences
Understanding Ordered Number Lists, General Terms tₙ, and Pattern Identification
Topic 02 • Explicit & Recursive Rules
Learning How to Calculate Terms Directly from Position n or Using Previous Terms
Topic 03 • Arithmetic Progressions
Exploring Constant Common Differences d, Linear Sequence Graphs, and Increments
Topic 04 • AP Formulas & Sums
Applying tₙ = a + (n-1)d and Formulas for Sums of First n Terms and Natural Numbers
Topic 05 • Geometric Progressions
Investigating Constant Common Ratios r, Multiplicative Growth, and Compound Patterns
Topic 06 • Special Sequences
Studying Triangular Numbers, Square Numbers, Fibonacci Sequence, and Sierpiński Triangles
Topic 07 • Real-Life Applications
Solving Practical Problems Involving Salary Increments, Bacterial Cultures, and Bouncing Balls
Module 08 • Solutions & Quiz