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Find the determinant of the upper triangular matrix with rows (2, 5, 1), (0, 3, 4) and (0, 0, -1).
A0
B-5
C-6
D6
Answer & Solution
Correct answer: C. -6
A triangular matrix has determinant equal to the product of its diagonal entries: 2 x 3 x (-1) = -6.
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