Question

what is dearrangement.How is it Calculated​

Answer 1

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Let we have n distinct objects then total number of dearrangement of n object

i.e no one goes to the right position

=n![1-$\large \frac{1}{1!}+ \frac{1}{2!}- \frac{1}{3!}.......({-n}^{n})\frac{1}{n}$]

Answer 2

Answer ➡

⏩Dearrangement

The number of arrangement in which no one goes to their correct position are known as Dearrangement .

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