1.
Let A=[aij]A = [a_{ij}] be a square matrix of order 3 such that aij=1a_{ij} = 1 for all i,j=1,2,3i, j = 1, 2, 3. Then, the matrix A2+A3++A10A^2 + A^3 + \ldots + A^{10} is equal to: