KEAM 2013 Math Paper

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Question : 73 of 120

Marks: +1, -0

If the vectors

−

PQ

=−3

⋀

i

+4

⋀

j

+4

⋀

k

and

−

PR

=5

⋀

i

−2

⋀

j

+4

⋀

k

are the sides of a triangle PQR then the length of the median through P is

√14
√15
√17
√18
√19

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