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UPSC NDA I 2023 Mathematics Solved Paper

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Consider the following for the next two (02) items that follow :
The position vectors of two points A and B are

^

i

−

^

j

and

^

j

+

^

k

respectively.

[NDA I 2023]

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Question : 69

Total: 120

Consider the following points :
1. (−1,−3,1)
2. (−1,3,2)
3. (−2,5,3)
Which of the above points lie on the line joining A and B ?

1 and 2 only
2 and 3 only
1 and 3 only
1,2 and 3

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