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CGP EDU Academic Team
Published on: August 14, 2026
There are four balls of different colours and four boxes of colurs same as those of the balls. The number of ways in which the balls, one in each box, could be placed such that a ball doesn't go to box of its own colour is
Text Solution
Verified by ExpertsThe correct answer is:
C
Number of derangement are = 4 !
.
(Since number of derangements in such a problem is given by 
.
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