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A square matrix in which all the elements lying on the main diagonal of the matrix are equal and the remaining elements off the main diagonal are all zero is called?

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A square matrix in which all the elements lying on the main diagonal of the matrix are equal and the remaining elements off the main diagonal are all zero is called? Answer: Scalar matrix

A square matrix where all the main diagonal elements are equal and all other elements are zero is called a scalar matrix. A special type of scalar matrix, where the diagonal elements are all 1, is called an identity matrix or unit matrix.

Question context

This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the ETEA Educational Testing and Evaluation Agency preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.