The logic is: I. Suresh is 15th from the left in the row → Not sufficient (As there is no information regarding Keerthi) II. Keerthi is exactly in the middle and there are ten students towards his right → Not sufficient (As there is no information regarding Suresh) On considering both the statements together, can be concluded as follows: Keerthi is exactly in the middle, hence there are ten students towards his right and left both sides and total students = 10 + 10 +1 = 21. Therefore, the position of Keerthi from left = 11th and Suresh is 15th from the left in the row. Players between Suresh and Keerthi in a row of players = (15 + 11) -21 - 2 = 3 Hence, data in statement I and II together are necessary is the correct answer.