If a matrix has equal number of columns and rows then it is said to be a
If the number of rows and columns of a matrix are not equal, then the matrix is called ___ matrix.
If the number of rows and columns of a matrix are equal, then the matrix is called ___ matrix.
Matrix A has x rows and x + 5 columns. Matrix B has y rows and 11 - y columns. Both AB and BA exist.Then, the value of x and y is equal to