1.

The number of ways of choosing triplet (x,y,z) such that z>max of (x,y) and x,y,z∈{1,2,...,n,n+1} is

Answer»

The number of ways of choosing triplet (x,y,z) such that z>max of (x,y) and x,y,z{1,2,...,n,n+1} is



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