Binomial Theorem, Factorial, Permutations, Combination and Probability Tricks and Formulas
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Binomial Theorem
If n is a natural number that is greater than or equal to 2, then according to the binomial theorem:
Here,
Factorial
Permutations
Combinations
Important Properties
Partition Rule
Number of ways of distributing n identical things among r persons when each person may get any number of things