A, B and C are matrices. What are their ranks?
If you consider the rows of an m x n matrix as vectors in R^n, they span a subspace called the row space of the matrix. The dimension of this space is called the "row rank" of the matrix. Similarly, if you consider the columns as vectors in R^m, they also span a subspace of R^m called the column space, and the dimension ...
The ranks of three matrices are found. The solution is detailed. The response was given a rating of "5" by the student who originally posted the question.