Inverse matrix

Find how many times is the larger determinant is the matrix A, which equals 9 as the determinant of its inverse matrix.

Correct answer:

n =  81

Step-by-step explanation:

$$\begin{gathered} d_1=9 \\ {d}_2=1\mathrm{/}{d}_1=1\mathrm{/}9={\displaystyle \frac{1}{9}}\doteq 0.1111 \\ n=d_1\mathrm{/}{d}_2=9\mathrm{/}0.1111=81 \end{gathered}$$

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