There are four balls of different colours and four boxes of colours, same as those of the balls. The
Channel: Doubtnut
Date: 12/04/2020

There are four balls of different colours and four boxes of colours, same as those of the balls. The number of ways in which the balls, one in each box, could be placed such thast a ball does not go to a box of its own colour is: (A) `|__4-1` (B) 9 (C) `|__3+1` (D) none of these