campus placement AMCAT Mock Test Programming and Data Structure Programming in C Array

Calculate the size of a square matrix (n × n) where the elements are present at (i + j) ≥ n + 1. Assume that index starts from 1.

1
n
2
\(\frac{{n\left( {n - 1} \right)}}{2}\)
3
\(\frac{{n\left( {n + 1} \right)}}{2}\)
4
n(n – 1)
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