If `(AB)'=B'A'`, where A and B are not square matrices, then number of rows in A is equal to number of columns in B and number of columns in A is equal to number of rows in B.

Explanation

To solve the problem, we need to analyze the given statement and understand the implications of the matrix operations involved.

### Step-by-Step Solution:

1. **Understanding the Given Statement**:
We start with the equation \((AB)' = B'A'\). This means that the transpose of the product of matrices \(A\) and \(B\) is equal to the product of the transposes of \(B\) and \(A\).

2. **Defining the Orders of Matrices**:
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