Videos
As Simple as Counting Part 1
201
See How Its Done
404
As Simple as Counting Part 2
53
Introducing Permutations
193
To Repeat or Not to Repeat!
264
The Mighty nPr
325
Permutation with and without Repetition
71
n Things, Not All Different, Taken All at a Time
389
Some Solved Examples
421
Combinations
439
Mutinomial Theorem
391
Solved Examples on Multinomial Theorem Part 1
196
Solved Examples on Multinomial Theorem Part 2
246
Couple of Solved Ones Part 1
158
Couple of Solved Ones Part 2
195
A Tricky Question Solved
298
JEE Main Analysis
134
Permutation
155
Position of the word
199
An imporatant relation
93
Triangle
156
Possible divisors
60
Repetitions-1
121
Repetitions-2
221
Number of solutions
286
Combinations-1
136
Combinations-2
217
Subsets
141
Combination based on geometry
147
Arrangement
216
Distribution
140
Analysis of Advanced Paper
125
Geometry Models Part 1
185
Geometry Models Part 2
271
Geometry Models Part 3
187
Geometry Models Part 4
148
Geometry Models Part 5
135
Geometry Models Part 6
95
Geometry Models Part 7
190
Geometry Models Part 8
126
Geometry Models Part 9
65
Geometry Models Part 10
178
Geometry Models Part 11
119
Geometry Models Part 12
289
Formation of Groups Part 1
174
Formation of Groups Part 2
113
Formation of Groups Part 3
82
Formation of Groups Part 4
209
Formation of Groups Part 5
157
Formation of Groups Part 6
337
Formation of Groups Part 7
165
Formation of Groups Part 8
347
Total Selection Part 1
315
Total Selection Part 2
237
Total Selection Part 3
233
Total Selection Part 4
236
Circular Permutations Part 1
245
Circular Permutations Part 2
77
Circular Permutations Part 3
272
Circular Permutations Part 4
167
Circular Permutations Part 5
199
Circular Permutations Part 6
130
Derangement Part 1
57
Derangement Part 3
594
Derangement Part 4
77
Derangement Part 5
113
Derangement Part 6
399
Derangement Part 2
262
Introduction to Multiplication Rule of Counting
333
Multiplication Rule of Counting in Generalised Form
310
Introduction to Multiplication Rule of Counting
341
Multiplication Rule of Counting in Generalised Form
308
Introduction to Addition Rule of Counting
250
Addition Rule of Counting in Generalised Form
109
Factorial Notation
414
Restrictions on Factorial
73
Definition of Permutation
441
Mathematical Meaning of nPr
351
Combination
392
Selection followed by Arrangement
560
String Method
416
String Method
125
String Method
126
Gap Method
296
String Method
142
Gap Method Under Restriction
227
Gap Method Under Restriction
635
Introduction to Circular Permutations
650
Circular Permutation of 3 Distinct Objects
388
Circular Permutation of n Distinct Objects
344
Circular Permutation of n Distinct Objects
126
Restricted Circular permutations
363
Combinations Followed by Circular Permutation
186
Effects of Clockwise or Anticlockwise Direction
487
Formation of 2 Groups of Unequal Sizes
596
Formation of 2 Group of Unequal Size and Distribution
183
Formation of Two Groups of Equal Sizes
721
Formation of Two Group of Equal Size and Distribution
210
Selection from Distinct Elements in None, One or More Ways
694
Selection from Distinct Elements in None, One or More Ways using 2^n
521
Selection from Identical Elements of One Kind in None, One or More Ways
603
Total Selections of Identical Objects of More than One Kinds
967
Selection of at least One of Identical Objects of More than One Kinds
133
Selection of at least One of Identical Objects of More than One Kinds
595
Number of Lines from Non Collinear Points
416
Number of Lines using n Points in a Plane
405
Number of Triangles from Non-Collinear Points
232
Number of Triangles from n Points
159
Points of Intersection of Distinct Lines
599
Number of Diagonals in a Polygon
504
Distribution of n Distinct Items in m Boxes
507
Distribution of r Items from n Distinct Items in m Boxes
143
Identical Items to Distinct Boxes
508
Beggar's Method for None, One or More
291
Beggar's Method for Non Empty Box
223
Application of Fundamental Principle of Counting
570
Exponent of prime in n!
238
Application of Fundamental Principle of Counting
279
Properties of nPr Part-2
111
Properties of nPr Part-3
115
Properties of nCr Part-1
114
Properties of nCr Part-2
167
Permutation When Repetition of one item is allowed
461
Permutation When Some Objects are repeated
393
Formation of Groups of Unequal Sizes
319
Formation of Groups of Equal Sizes
259
Number of Divisors and Their Sum
158
Number as Product of Two Factors
367
Number as Product of Two Co-prime Factors
428
Number of Parallelograms and Squares
140
Inclusion and Exclusion
419
Derangements
594
Applications of Beggar's Method Part-1
299
Distinct Items to Distinct Boxes, None of the Boxes remain Empty
369
Combination under Restriction
238
"Permutation under Restricted Domain"
310
Rank of a word
701
Maximum Points of Intersection of Circles
75
Non Negative Integral Solutions for Inequalities
194
Derangements
57