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A square matrix is called __________ matrix if all the elements below the diagonal are 0:

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A square matrix is called __________ matrix if all the elements below the diagonal are 0: Answer: Upper triangle

Question context

This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the Engineering College Admission Test (ECAT) preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.