Let A+2B=[16−52−33031] and 2A−B=[220−1−11562]. If Tr(A) denotes the sum of all diagonal elements of the matrix A, then Tr(A)−Tr(B) has value equal to
Held on 18 Mar 2021 · Verified 6 Jul 2026.
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If the roots of x² - 5x + k = 0 are in the ratio 2:3, then k equals:
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