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Question 15 - CBSE Class 12 Sample Paper for 2022 Boards (MCQ Based - for Term 1) - Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Last updated at May 29, 2023 by

For matrix A = [8(2 5 -11 7)], (adj A)’ is equal to

(a) [8(2 5 -11 7)]    (b) [8(7 5 11 2)]
(c) [8(7 11 -5 2)]    (d) [8(7-5 11 2)]

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Question 15 For matrix A = [■8(2&5@−11&7)], (adj A)’ is equal to (a) [■8(2&5@−11&7)] (b) [■8(7&5@11&2)] (c) [■8(7&11@−5&2)] (d) [■8(7&−5@11&2)] A =[■8(2&5@−11&7)] Now, adj A = [■8(2&5@−11&7)] =[■8(𝟕&−𝟓@𝟏𝟏&𝟐)] Thus, (adj A)’ = [■8(7&11@−5&2)] So, the correct answer is (C)

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