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UPSC NDA I 2014 Mathematics Paper

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For the next three (03) items that follow:
The vertices of a triangle ABC are A(2, 3, 1), B(-2, 2, 0) and C(0, 1, -1).

[NDA I 2014]

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Question : 68

Total: 120

What is the magnitude of the line joining mid points of the sides AC and BC?

1
√2
unit
1 unit
3
√2
unit
2 unit

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