UPSC NDA 2 2021 Mathematics Solved Paper

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Question : 9 of 120

Marks: +1, -0

If ∆=|

a	b	c
d	e	f
g	h	i

|
then what is
|

3d+5g	4a+7g	6g
3e+5h	4b+7h	6h
3f+5i	4c+7i	6i

| equal to?

[NDA-II 2021]

∆
7∆
72∆
−72∆

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