[" 37.There are "5" different coloured balls and "5" boxes of "],[" of ways that exactly "2" balls will go to the boxes of "],[[" 1) "20," 2) "32]]

There are 5 different coloured balls and 5 boxes of the same colour as that of balls the number of ways that exactly two balls will go to its same coloured boxes is

There are 5 different colour balls and 5 boxes of colours same as those of the balls. The number of ways in which one can place the balls into the boxes, one each in a box, so that no ball goes to a box of its own colour is

There are 5 different colour balls and 5 boxes of colours same as those of the balls. The number of ways in which one can place the balls into the boxes, one each in a box, so that no ball goes to a box of its own colour is

There are four balls of different colours and four boxes of colours same as those of the balls. Find the number of way in which the balls ,one in each box,of its own colour.

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 each in a box could be placed such that a ball does not go to a box of its own colour is