Here you will learn formula permutation and combination and properties of permutation and combination with examples. Let’s begin – Permutation and Combination Formula Permutation Each of the arrangements in a definite order which can be made by taking some or all of the things at a time is called a PERMUTATION. In permutation, order of […]
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Here you will learn addition principle of counting and multiplication principle in permutation and combination with example. Let’s begin – If an event A can occur in ‘m’ different ways and another event B can occur in ‘n’ different ways, then the total number of different ways of- Multiplication Principle of Counting Simultaneous occurrences of
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Here you will learn how to find total number of combinations and distribution of distinct objects and alike objects. Let’s begin – Total Number of Combinations (a) Given n different objects, the number of ways of selecting at least one of them is, \(^{n}C_1\) + \(^{n}C_2\) + \(^{n}C_3\) +…….+ \(^{n}C_n\) This can also be stated
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Here you will learn dearrangement formula and permutation of alike objects with example. Let’s begin – Dearrangement Formula There are n letters and n corresponding envelopes. The number of ways in which letters can be placed in the envelopes (one letter in each envelope) so that no letter is placed in correct envelope is n