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Name the octants in which the following ...

Name the octants in which the following points lie :
(1, 2, 3), (4, -2, 3), (4, -2, -5), (4, 2, -5), (-4, 2, -5), (-4, 2, 5), (-3, -1, 6), (2, -4, -7)

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The correct Answer is:
I,IV,VIII,V,VI,II,III,VII
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