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UPSC NDA I 2010 Mathematics Paper

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Question : 11

Total: 120

A vector

is collinear with the vector

=(2,1,−1) and satisfies the condition

equal to?

(1,1∕2,−1∕2)
(2∕3,1∕3,−1∕3)
(1∕2,1∕4,−1∕4)
(1,1,0)

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