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Complete Permutation & Combination will be discussed in this session for JEE Mains by Nishant Vora.
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00:00 Introduction
6:19 introduction to permutations and combinations
8:08 Factorial
11:18 Fundamental Principle of counting
33:20 Rank of a word
35:24 Shortcut #1 Finding rank of word w/o repetition
40:45 Shortcut #2 Finding rank of word w/ repititon
49:35 Basic Questions (PYQ)
1:02:03 Number of zeros in n!
1:11:40 Permutation vs Combination
1:25:50 Theorem #1 (Inclusion in combination)
1:28:34 Theorem #2 (Exclusion in combination)
1:30:06 Questions based on Formula Application (nCr and nPr) (PYQ)
1:44:14 No. of Straight lines and Triangles
2:02:54 Number of Diagonals in n-sided polygon
2:10:35 Linear Permutation
3:02:24 Batting order questions
3:07:51 Tick and Cross method
3:19:39 Formation of Groups
3:37:09 Permutation of alike objects
3:54:21 Permutation of objects taken some at a time
4:13:49 Circular Permutation
4:47:56 Total Number of selections
5:11:38 Number theory
5:40:53 Summation of numbers (Shortcut)
5:57:04 Distribution of alike objects (beggar-coin principle)
6:27:19 Derangement
6:41:03 Sirs tips for PnC
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