Teaching DSSSB TGT Mock Test 2025 Mathematics Matrices Adjoint and Inverse of a Square Matrix

यदि  \(A = \left[ {\begin{array}{*{20}{c}} {5a}&{ - b}\\ 3&2 \end{array}} \right]\) और A (adj A) = AAT, तब 5a + b के किसके बराबर है? 

1
5
2
4
3
13
4
-1
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