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In class 12 there are 8 students. In class 11 there are 6 students .In class 10 there are 5 students . Total ways of selecting 10 students , such that there are at least 2 students from each class and at most 5 students from 11 students of Class 10 and 11 combined is 100k. Then find value of k

There are 5 students in class 10, 6 students in class 11 and 8 students in class 12. If the number of ways, in which 10 students can be selected from them so as to include at least 2 students from each class and at most 5 students from the total 11 students of class 10 and 11 is 100 k, then k is equal to _______.

Study the double bar graphs given belwo and answer the following questions (a) Which sport is liked the most by Class VIII students? (b) How many students of Class VII like Hockey and Tennis in all? (c) How many students are there in Class VII? (d) For which sport is the number of students of Class VII less than that of Class VIII? (e) For how many sports students of Class VIII are less than Class VII? (f) Find the ratio of students who like Badminton in Class VII to students who like Tennis in Class VIII.