Which of the following statements is/are...

Which of the following statements is/are true about square matrix `A` or order `n ?` `(-A)^(-1)` is equal to ` A^(-1)w h e nn` is odd only If `A^n-O ,t h e nI+A+A^2++A^(n-1)=(I-A)^(-1)dot` If `A` is skew-symmetric matrix of odd order, then its inverse does not exist. `(A^T)^(-1)=(A^(-1))^T` holds always.

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