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In How Many Ways Can 7 Letters Be Posted in 4 Letter Boxes? - Mathematics

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In how many ways can 7 letters be posted in 4 letter boxes?

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Solution

Each letter can be posted in any one of the 4 letter boxes.
Number of ways of posting one letter = 4
∴ Required number of ways of posting the 7 letters =`4xx4xx4xx4xx4xx4xx4=4^7`

Concept: Permutations
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APPEARS IN

RD Sharma Class 11 Mathematics Textbook
Chapter 16 Permutations
Exercise 16.2 | Q 46 | Page 16

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