WBJEE 2018 Math Solved Paper

Question : 66 of 75

Marks: +1, -0

In a third order matrix A, aij denotes the element in the i-th row and j-th column.
If ai=0 for i=j
‌‌‌‌‌‌ = 1 for i > j
‌‌‌‌‌‌ = -1 for i < j
Then the matrix is