A question paper contain 15 questions. In how many ways can 7 questions be attempted?

A question paper contains 20 questions in how many ways can 4 questions be attempted?

There are three section A,B, C in a paper each section having 5 questions . In how many ways a student can solve exactly 5 questions taken at least one question from each section.

A question paper on mathematics consists of 12 questions divided into 3 parts A,B and C, each containing 4 questions.In how many ways can an examinee answer 5questions selecting at least one from each part.

There are three sections in a question paper, each containing 5 questions. A candidate has to solve any 5 questions, choosing at least one from each section. Find the number of ways in which the candidate can choose the questions.

There is a question paper consisting of 15 questions. Each question has an internal choice of 3 options. In how many ways can a student attempt one or more questions of the given fifteen questions in the paper?

There asre 5 questiions in a question paper. In how many ways can a boy solve one or more questions?