In how many ways can a student choose a programme of 5 courses if 9 courses are available and 2 specific courses are compulsory for every student?


Given: 9 courses are available and 2 specific courses are compulsory for every student


Here 2 courses are compulsory out of 9 courses, so a student need to select 5—2=3 courses


number of ways in which 3 ways can be selected from 9—2(compulsory courses) = 7 are 7C3


7C3 =


7C3 =


Number of ways a student selects 5 courses from 9 courses where 2 specific courses are compulsory are: 35


9
1