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How many ways are there to put (5) letters into (5) addressed envelopes so that no letter goes into the correct envelope?

Answer and explanation

Correct answer: (44)

This is the derangement of (5) objects, whose value is (44). In derangement, no object remains in its correct place.

Related tags

PermutationsDerangementEnvelopesPermutations And CombinationsMathematicsClass 11 Mcq

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