[Solved] 16 students of Dravid International School (DIS) are chosen to participate in national level 5-a-side cricket tournament. Names of the students are Ajay, Binod, Charls, Dev, Elan, Firoz, Girish, Hari, Imran, John, Kedar, Laxman, Madhav, Ned, Ojha, Peush. These 16 students are a mix of R ^ (th) graders, 9th graders and 10th graders. The school principal has instructed the coach that each team he selects for a match must contain exactly two 8 ^ (th) graders, exactly two 9 ^ (th) graders and one 10th grader. We also know the following a) Girish is a 9 ^ (th) grader b) Binod and Imran are both 8th graders c) There are only three 1a ^ (th) grade students among the 16 DIS takes part in eight matches. Here are the teams for each of the match Match 1 Ajay Charls girish Imran Laxman Match 2 Firoz Imran Kedar Laxman Madhav Match 3 Charis Elan Firoz Girish Kedar Match 4 Ajay Binod Firoz Girish John Match 5 Ajay Dev John Kedar Peush Match 6 Charls Firoz Girish Laxman Ojha Match 7 Binod Imran Laxman Ned Ojha Match 8 Dev Hari John Kedar Madhav questions 1) how many 9th graders have their name starting with a vowel ( a,e,I,o,u)? 2)who is the 10th grader who played in 6th match ? 3)who are the 9 th graders who played in the 8th match? 4) how many 8th graders are there among the 16 students?