Question

A square matrix having all the elements above the leading diagonal equal to zero is known as:

• A. Null Matrix
• B. Zero Matrix
• C. Upper Triangular Matrix
• D. Lower Triangular Matrix

Hint:

Remember: "Upper → zeros below, Lower → zeros above".

Answer 1

The Correct Option is D

Step 1: Recall matrix definitions.
- Upper Triangular: all elements below the diagonal = 0
- Lower Triangular: all elements above the diagonal = 0
- Null/Zero matrix: all elements = 0

Step 2: Match with description.
All elements above diagonal = 0 → Lower Triangular