It can be shown that a nonnegative n X n matrix is irreducible if and only if (I + A) n- 1 > 0. In Exercises 1-3, use this criterion to determine whether the matrix A is irreducible. If A is reducible, find a permutation of its rows and columns that puts A into the block form

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B: C O D 0100 1000 0010 0001 0100 1100 0001 0011 01100 00010 01110 10000 00-01