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For what value of inverse does not exist for the matrix :
For what value of $k$ inverse does not exist for the matrix $\begin{bmatrix} 1 & 2 \\ k & 6 \end{bmatrix}$:
- (a)0
- (b)3
- (c)6
- (d)2
Answer
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From ISC 2021 Specimen Mathematics Paper 1, question 1(vi).