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If A is a square matrix and det(A) ≠ 0 then A is
Asingular (typical)
Binvertible (non-singular)
Cdiagonal
Dsymmetric
Answer & Solution
Correct answer: B. invertible (non-singular)
1. A square matrix is invertible iff its determinant is non-zero.
2. Such a matrix is called non-singular.
3. Singular matrices have determinant zero and no inverse.
_Source: Maharashtra Balbharati Std XII Mathematics Part 1, Ch 2 "Matrices" §2.6_
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