A sports team of 11 students is to be constituted, choosing at least 5 from class XI and at least 5 from class XII. If there are 25 students in each of these classes, in how many ways can the teams be constituted?

A sports team of 11 students is to be constituted,choosing at least 5 from class XI and at least 5 from class XII.if there are 20 students in each of these classes,in how many ways can the team be constituted.What is the importance of sports in one's life?

In a class,one out of every six students fails.If there are 42 students in the class,how many pass?

From a class of 25 students, 4 are to be chosen for a competition. In how many ways can this be done?

From a class of 32 students,4 are to be chosen for a competition.In how many ways can this be done?

There are 45 students in a class and 3/5 of them are boys. How many girls are there in the class?

There are 42 students in a class and 5/7 of the students are boys. How many girls are there in the class?

From a class of 30 student , 3 are to be chosen for a competition . In how many ways can this be done ?

On the event of new year each student of class XI sends cards to his classmates. If there are 40 students in the class number of cards exchanged during the process is