An n × n array v is defined as follows:
v[i, j] = i − j for all i, j, 1 ≤ i ≤ n, 1 ≤ j ≤ n
The sum of the elements of the array v is

Question

An n × n array v is defined as follows: v[i, j] = i − j for all i, j, 1 ≤ i ≤ n, 1 ≤ j ≤ n The sum of the elements of the array v is

Accepted Answer

Correct answer: A — The sum of the ith row and ith column is 0 as shown below. Since the number of rows equals the number of columns, the total sum will be 0.

Answer

A. 0

Answer

B. n − 1

Answer

C. n² − 3n + 2

Answer

D. n² (n + 1) / 2

An n × n array v is defined as follows: v[i, j] = i − j for all i, j, 1 ≤ i ≤…