Chapter 12 of 27
Important Topics
Permutations And Combinations — Important Topics
CG PET · Mathematics
Most important topics from Permutations And Combinations for CG PET Mathematics. Focus on these high-weightage areas for maximum score.
Interactive on Super Tutor
Studying Permutations And Combinations? Get the full chapter — free.
Practice questions, revision notes, formula sheet and AI doubt-solver — built for CG PET Mathematics.
Super Tutor
Learn better with visuals Super Tutor has hundreds of illustrations like this across every chapter — all free to try.
Get startedPermutations And Combinations — Syllabus & Topics
Topics covered in Permutations And Combinations for CG PET Mathematics.
Topics in Permutations And Combinations
1
Fundamental Principle of Counting
- Two basic principles: Multiplication Principle and Addition Principle
- Multiplication Principle: If first operation can be done in m ways and second in n ways, both together can be done in m × n ways
- Addition Principle: If one operation can be done in m ways OR another in n ways, either can be done in (m + n) ways
2
Factorial Notation and Basic Formulas
- n! = 1 × 2 × 3 × ... × (n-1) × n
- 0! = 1 by definition
- n! is undefined for negative numbers and fractions
3
Permutations
- Permutation is arrangement of objects in definite order
- Order matters in permutations
- ⁿPᵣ represents permutations of n objects taken r at a time
4
Combinations
- Combination is selection of objects where order doesn't matter
- ⁿCᵣ represents combinations of n objects taken r at a time
- Also written as C(n,r) or (n choose r)
Key Concepts
Two basic principlesn! = n × (nArrangements of objects in a definiteSelection of objects where order doesn'tArrangements in a circle where rotations
Frequently Asked Questions
What topics are covered in Permutations And Combinations for CG PET?
Permutations And Combinations is an important chapter in CG PET 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 CG PET?
Permutations And Combinations is a frequently tested chapter in CG PET Mathematics. Questions from this chapter appear regularly in previous year papers. There are 257 practice questions available for this chapter.
How to prepare Permutations And Combinations for CG PET?
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.
More resources for Permutations And Combinations
For CG PET aspirants
Get the full Permutations And Combinations chapter — for free.
Practice questions, revision notes, formula sheet and AI doubt-solver for CG PET Mathematics.