changing the signs of the entries of $n \times n$ matrix from +(-) to -(+),respectively. Will change the signs of the determinant.

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one of the properties of determinant is Interchanging two columns(rows) of a matrix will lead to change in the sign of determinant. does it also holds for interchanging its entries' sign will change the sign of the result? how? please help me.

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Hint:

$\det(cA)=c^{n}\det(A),$ for an $n × n$ matrix $A$