Study the following information carefully to answer the question that follow.

Indian Olympic Association is in the process of selecting a team of four athletes for participating in the relay race in the forthcoming Olympics. After watching their performance in the national events, the Association has short – listed seven athletes their names are Zacharia, Yohana, Wasim, Dalbir, Chakavati, Bishan and Anil. The association wants that, in the final team, there should be two athletes who have participated in the Olympic earlier. Zacharia, Yohanna and Wasim have represented the country earlier. The association also wants that the team should be well kind and friendly but is faced with a situation wherein Yohanna and Anil are not friendly while Zacharia and Chakravati don’t’ see eye to eye with each other. To make the matters more difficult, Anil and Bishan do not like each other.

Based on the above requirement and assumptions, answer the following questions: