In how many ways can an examinee answer a set of ten true/false type questions?

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 5 questions selecting at least one from each part.

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

In how many ways can 6 persons stand in a queue?

In how many ways can 6 persons stand in a queue?

In how many ways can 6 persons stand in a queue?

In how many ways can 6 persons stand in a queue?

In how many ways can 6 persons be seated at a round table?

In how many ways can 5 persons be seated at a round table?

In how many ways in which an examiner can assign 30 marks to 8 questions, giving not less than 2 marks to any question.

In how many ways can 8 people sit around a table?