In a school, there are four sections of 40 students each in XI standard. In how many ways can a set of 4 student representatives be chosen, one from each section?

Given: there are four sections of 40 students each in XI standard.


To find : number of ways in which a set of 4 student representatives be chosen, one from each section.


Ways of selecting one student from section 1:40C1


Ways of selecting one student from section 2:40C1


Ways of selecting one student from section 3:40C1


Ways of selecting one student from section 4:40C1



So number of ways of choosing a set of 4 student representatives one from each section=40C1 × 40C1 × 40C1 × 40C1


=40 × 40 × 40 × 40


=2560000


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