Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B2

Chapter

Algebra

Question:

Let $A=[a_{ij}]$ be $2 × 2 $ matrix, where $aij=\left\{\begin{matrix}1 & i≠j\\0 & i=j \end{matrix}\right.$, then

Options:

$A^{22}-A^7+A=I$

$A^{23}-A^7+A=I$

$A^{22}-A^8+A=I$

$A^{23}-A^8-A=I$

Correct Answer:

$A^{22}-A^7+A=I$