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Let us consider a square matrix of order n ×n. Every element of this matrix is either 1 or - 1 and the product of entries in each row and each column is equal to - 1. Find out the number of such possible matrices for n = n. |
| Answer» Let us consider a square matrix of order n ×n. Every element of this matrix is either 1 or - 1 and the product of entries in each row and each column is equal to - 1. Find out the number of such possible matrices for n = n. | |