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A square matrix with ones on the diagonal and zeros elsewhere is the:
AA row matrix
BA skew matrix
CIdentity matrix
DThe zero matrix
Answer & Solution
Correct answer: C. Identity matrix
1. The diagonal entries are all equal to one.
2. Every other entry is zero.
3. This is the identity matrix.
_Source: NCERT Class 12 Mathematics Part I, Chapter 3, Matrices._
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