In a group of students, there are 24 opting for photography and 26 opting for acting cource. Find the number of students, which are in photography course or in acting coure in the following cases: (i) Two courses are conducted at the same time. (ii) Two courses are conducted at the different time and 8 people are interested in both the courses.

In Class XI of a certain school, there are 30 students in a Mathematics class and 20 students in Biolog class. Find the number of students which are in Mathematics class or in Biology class in the following cases: (i) Two classes are conducted at the same time. (ii) Two classes are condcuted at different time and 5 students study both the subject

In Class XI of a certain school, there are 30 students in a Mathematics class and 20 students in Biolog class. Find the number of students which are in Mathematics class or in Biology class in the following cases: (i) Two classes are conducted at the same time. (ii) Two classes are condcuted at different time and 5 students study both the subject

In an adventure trip, there are 50 people interested for camel riding and 45 people are interested in horse riding. Find the number of people who are interested in camel riding or horse riding in the following cases. (i) The rides are conducted at he same time. (ii) The rides are conducted at different time and 20 people are interested in both rides.

In an adventure trip, there are 50 people interested for camel riding and 45 people are interested in horse riding. Find the number of people who are interested in camel riding or horse riding in the following cases. (i) The rides are conducted at he same time. (ii) The rides are conducted at different time and 20 people are interested in both rides.

The number of ways, in which a student can choose 5 courses out of 8 courses, when two courses are compulsory, is