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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 _______.

Which of the following relations are functions? Give reasons. If it is a function, determine its domain and range. (i) {(2," "1)," "(5," "1)," "(8," "1)," "(11 ," "1)," "(14 ," "1)," "(17 ," "1)} (ii) {(2," "1)," "(4," "2)," "(6," "3)," "(8," "4),"

which of the following relation are functions and give reason if it is a function determine its domain and range {(2,1),(4,2),(6,3),(8,4),(10,5),(12,6),(14,7)}

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

A train starts from Delhi at 6 : 00 AM and reaches Ambala Cantt at 10 AM. The other train starts from Ambala Cantt at 8 AM and reaches Delhi at 11:30 PM. If the distance between Delhi and Ambala Cantt. is 200 km, then at what time did the two trains meet each other ?

If 1-5 , 6-10 , 11-15 , ..., are the classes of a frequency distribution , then the size of the class is "_______" .