Q86. Let $A$ be a non-singular matrix of order 3 . If $\operatorname { det } ( 3 \operatorname { adj } ( 2 \operatorname { adj } ( ( \operatorname { det } A ) A ) ) ) = 3 ^ { - 13 } \cdot 2 ^ { - 10 }$ and $\operatorname { det } ( 3 \operatorname { adj } ( 2 \mathrm {~A} ) ) = 2 ^ { \mathrm { m } } \cdot 3 ^ { \mathrm { n } }$, then $| 3 \mathrm {~m} + 2 \mathrm { n } |$ is equal to