Question

Suppose 3 people are seated in 3 of the 5 chairs in a room. After the break, in how many ways can they
be seated so that no person occupies the same chair as before?
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Answer 1

Step-by-step explanation:

Let th chairs be numbered from 1 to 5.

And the three persons be A,B and C.

Suppose A was seated at chair 1 , B at 2 and C at 3.

After the break,

They must be sitted in the following manner so that no one occupies the same chair as before.

A- 2

B- 3

C- 4