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The worked inverse formula is stated for a matrix of order:
ASeven
BEight
CTwelve
DThree
Answer & Solution
Correct answer: D. Three
1. Only small orders are covered throughout.
2. The worked inverse uses the largest case available.
3. It takes a non-singular square matrix of order 3 by 3.
4. So the answer is three.
_Source: NCERT Class 12 Mathematics, Ch 4 'Determinants'_
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