A company wants to select a team of four call centre executives from its South Indian Centre for transfer to North India where they are going to set up a new centre. The company is managed by professional managers and is very particular about human resources and. personnel relation.There are seven team members of equal ability X, Y and Z (who are Senior), and A,B, C and D (who are Junior). The company requires that there should be two senior executives and two junior executives in the team. It is also necessary that all of the executives in a particular team are friendly with each other in order to have a real team spirit and avoid any personnel relations problem in the new centre being set up in the North.
Following is the situation of relations among the seven executives:
(i) Y and A are not friendly.
(ii) Z and, C are not friendly.
(iii) A and B are not friendly.
If both Y and Z are selected, which of the executives must be on the team with them?
