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A matrix is an ordered rectangular array of numbers or:
AFunctions
BSentences
CPictures
DColours
Answer & Solution
Correct answer: A. Functions
1. The entries of a matrix need not be plain numbers.
2. They may be expressions that vary.
3. So a matrix is an array of numbers or functions.
_Source: NCERT Class 12 Mathematics Part I, Chapter 3, Matrices._
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