UPSC NDA II 2011 Mathematics Paper

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Question : 71 of 120
 
Marks: +1, -0
For what value of m are the vectors 2
∧
i
−3
∧
j
+4
∧
k
,
∧
i
+2
∧
j
−
∧
k
and m
∧
i
−
∧
j
+2
∧
k
coplanar?
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