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Formula Sheet

Permutations And Combinations — Formula Sheet

AP EAPCET · Mathematics

Free Permutations And Combinations formula sheet for AP EAPCET Mathematics 2026 — all important formulas, equations, and constants for quick reference.

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Formula Sheet — Permutations And Combinations

Important formulas and equations from Permutations And Combinations for AP EAPCET Mathematics.

Formulas — Permutations And Combinations

Fundamental Counting Principles

Total ways = m × n
Total ways = m + n

Factorial and Basic Permutations

n! = n × (n-1) × (n-2) × ... × 2 × 1
ⁿPᵣ = n!/(n-r)!
ⁿPₙ = n!

Special Permutation Cases

Repetition allowed: nʳ
Identical objects: n!/p!
Multiple identical groups: n!/(p₁! × p₂! × ... × pₖ!)

Circular Permutations

Clockwise ≠ Anticlockwise: (n-1)!
Clockwise = Anticlockwise: (n-1)!/2
Circular ⁿPᵣ (different): ⁿPᵣ/r
Circular ⁿPᵣ (same): ⁿPᵣ/(2r)

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Frequently Asked Questions

What topics are covered in Permutations And Combinations for AP EAPCET?
Permutations And Combinations is an important chapter in AP EAPCET Mathematics. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Fundamental Principle of Counting, Factorial Notation and Basic Formulas, Permutations, Combinations.
How important is Permutations And Combinations for AP EAPCET?
Permutations And Combinations is a frequently tested chapter in AP EAPCET Mathematics. Questions from this chapter appear regularly in previous year papers. There are 306 practice questions available for this chapter.
How to prepare Permutations And Combinations for AP EAPCET?
Start by understanding the core concepts, then solve practice questions. Focus on formulas and their applications. Use revision notes for quick review before the exam.

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