alleryA matrix of order three by three holds entries numbering:
ANine ones
BThree ones
CSix ones
DTwelve ones
Answer & Solution
Correct answer: A. Nine ones
1. The matrix has three rows and three columns.
2. Each row contributes three entries.
3. So there are nine entries in all.
_Source: syllabus Mathematics Part I, Chapter 4, Determinants._
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