In an examination, a student has to answer 4 questions out of 5 questi

1.	In an examination, a student has to answer 4 questions out of 5 questions; questions 1 and 2 are however compulsory. Determine the number of ways in which the student can make the choice.
Answer» It is given that 2 questions are compulsory out of 5 questions. So, the other 2 questions can be selected from the remaining 3 questions in ³C₂ = 3 ways.

In an examination, a student has to answer 4 questions out of 5 questions; questions 1 and 2 are however compulsory. Determine the number of ways in which the student can make the choice.

Answer»

It is given that 2 questions are compulsory out of 5 questions.

So, the other 2 questions can be selected from the remaining 3 questions in ³C₂ = 3 ways.