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

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

In how many ways can 5 boys and 5 girls sit in a ring

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.

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?

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

A question paper consists of two sections having respectively, 3 and 5 questions. The followinng note is given on the paper "it is not necessory to attempt all the questions one questions from each section is compulsory". In how many ways can candidate select the questions?