Question 47

Let $$P = [a_{ij}]$$ be a $$3 \times 3$$ matrix and let $$Q = [b_{ij}]$$, where $$b_{ij} = 2^{i + j}a_{ij}$$ for $$1 \leq i, j \leq 3$$. If the determinant of P, is 2, then the determinant of the matrix Q is


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