Q.Answer each of the following question in one sentence each :
What is Cramer Rule ?

Cramer's Rule solves linear equations using determinants: $x_i=D_i/D$, $D eq0$. Cramer's Rule states that for a system of linear equations whose coefficient-matrix determinant is $D eq0$, each variable equals the ratio $x_i=\dfrac{D_i}{D}$, where $D_i$ is the determinant obtained by replacing the $i$-th column of the coefficient matrix with the column of constants. …