numpy multi-dimensional array

The useful thing about numpy is it can create a multi-dimensional array. a_mul = np.array([[1,2,3], [4,5,6], [7, 8, 9]]) print(a_mul) [[1 2 3] [4 5 6] [7 8 9]] If I print(a_mul[0, 1]), what would I get? This means the first row, second column. So...