Question

The number of ways in which a student can choose 5 courses out of 9 courses if 2 courses are compulsory is

• A. 32
• B. 33
• C. 34
• D. 35

Answer 1

Answer: (D)

35

Out of 9 courses 2 are compulsory and student has to take total 5 courses.
That means student has choice to take any 3 courses out of remaining 7.
Hence number of ways ${=}^7{C}_3=35$