Teaching NVS PGT 2024 Test Series Mathematics Matrices

Let A = \(\left[\begin{array}{ll} 1 & 2 \\ 0 & 1 \end{array}\right]\) and B = I + adj(A) + (adj A)2 + … + (adj A)10. Then, the sum of all the elements of the matrix B is :  

1
–110
2
22  
3
–88
4
–124 
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