Let A=[aij] be a 4×4 matrix. If aij={2, when i=j0, when i≠j, then t – InterviewSolution

1.	Let A=[aij] be a 4×4 matrix. If aij={2, when i=j0, when i≠j, then the value of {det(adj(adjA))7} is (where {.} represents the fractional part function)
Answer» Let $A = [a_{i j}]$ be a $4 \times 4$ matrix. If $a_{i j} = {\begin{matrix} 2, when i = j 0, when i \neq j \end{matrix}$ , then the value of ${\frac{det(adj(adjA))}{7}}$ is (where ${.}$ represents the fractional part function)

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