Maths IIA — Weightage Analysis
Chapter-wise period allocation (from TGBIE Annual Plan 2025-26) and expected question type distribution. Total: 75 marks · 3 hours.
Paper Pattern
Section A — VSAQ
10 questions × 2 marks = 20 marks
All 10 are compulsory
Section B — SAQ
7 questions × 4 marks = 28 marks
Answer any 5 (attempt all 7 to choose best 5)
Section C — LAQ
7 questions × 7 marks = 49 marks
Answer any 5 (attempt all 7 to choose best 5)
Chapter-wise Weightage
| Chapter | Periods | VSAQ | SAQ | LAQ | Exam Tip |
|---|---|---|---|---|---|
| 1.Complex Numbers | 9 | ✓ | ✓ | — | Modulus-amplitude and complex plane problems are common VSAQs. |
| 2.De Moivre's Theorem | 4 | ✓ | — | — | Cube roots of unity and their properties — expect 1 VSAQ. |
| 3.Quadratic Expressions | 8 | ✓ | ✓ | — | Sign of expression and inequations are important SAQ topics. |
| 4.Theory of Equations | 14 | — | ✓ | ✓ | Relations between roots, Cardan's method, reciprocal equations — high LAQ probability. |
| 5.Permutations & Combinations | 13 | ✓ | — | ✓ | Circular permutations and selection problems appear in LAQ. |
| 6.Binomial Theorem | 18 | — | ✓ | ✓ | Highest period allocation — guaranteed LAQ; rational index in SAQ. |
| 7.Partial Fractions | 6 | ✓ | — | — | Typically 1 VSAQ. Know all three cases of denominator types. |
| 8.Measures of Dispersion | 12 | ✓ | ✓ | — | Variance and standard deviation from frequency tables — SAQ. |
| 9.Probability | 13 | — | ✓ | ✓ | Bayes' theorem problems are strong LAQ candidates. |
| 10.Random Variables & Distributions | 11 | ✓ | — | ✓ | Binomial distribution problems — mean, variance, and probability calculations. |
Period count based on TGBIE Annual Plan 2025-26. Higher periods = higher board exam weightage.
High-yield Focus Areas
- 🔴 Binomial Theorem (18 periods) — most important LAQ chapter; know positive integral index AND rational index
- 🔴 Theory of Equations (14 periods) — LAQ on transformations of roots and reciprocal equations
- 🟡 Probability & Random Variables (24 combined) — Bayes, Binomial distribution LAQs are repeated
- 🟡 Permutations & Combinations (13 periods) — LAQ on circular permutations or word formation