There are 12 questions on an examination, and each student must answer 8 questions including at least 4 of the first 5 questions. How many different combinations of questions could a student choose to answer?
2 answers
10
5C4x7C4=175
5C5x7C3=35
175+35=210
There are 210 different combinations.
5C5x7C3=35
175+35=210
There are 210 different combinations.