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If \(A=\begin{bmatrix}1&2\\3&4\end{bmatrix}\) and \(B=\begin{bmatrix}1&2\\3&5\end{bmatrix}\), which statement is correct?

Answer and explanation

Correct answer: Matrices are not equal

Two matrices are equal only if they have the same order and every corresponding entry is equal. Both A and B are 2×2 and entries (1,2,3) match, but the (2,2) entries are 4 and 5 which are different. Hence A ≠ B. Option A is wrong because one corresponding entry differs; option C is wrong because both matrices have the same order (2×2); option D is wrong because neither matrix is a zero matrix. Exam tip: to test equality check order first, then compare each corresponding element one by one.

Related tags

MatricesEquality2X2ComparisonClass12Equality Of MatricesMatrixMathematics

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