Q.

Consider the 2×2 matrix {{-1,-2},{-3,-4}}. What is the sum of elements of the maximum sum rectangle?

A. 0
B. -1
C. -7
D. -12
Answer» B. -1
Explanation: since all the elements of the 2×2 matrix are negative, the maximum sum rectangle is {-1}, a 1×1 matrix containing the largest element. the sum of elements of the maximum sum rectangle is -1.
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