Please show me how to calculate

Thanks

204. Define an " X-matrix" to be a square matrix with an odd number of rows and columns that has 0 's everywhere except on the two diagonals (the main diagonal and anti-diagonal), where it has 1 's. Find the rank of the following X-matrices: (a) 1000101010001000101010001 (b) The X-matrix of size (2n+1)(2n+1). (92 I)(98)