The total new employees
Therefore, they can be arranged in Ways
In 5 ways two adjacent desks for married couple can be selected that is
In 2! Ways the married couple can be arranged in the two desks
In 4! Ways the other four persons can be arranged.
Therefore, the no. of ways in which married couple occupy adjacent desks
Therefore, no. of ways in which married couple occupy non-adjacent desks
The required Probability