Tournament

Determine how many ways can be chosen two representatives from 34 students to school tournament.

Correct result:

n =  561

Solution:

n=C2(34)=(342)=34!2!(34−2)!=561n = C_{2}(34) = \dbinom{ 34}{ 2} = \dfrac{ 34! }{ 2!(34-2)!} = 561

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