UPSC NDA 2 2017 Mathematics Solved Paper
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Question : 45 of 120
Marks:
+1,
-0
Let
+
+ 2
−
,
= 2
−
+ 3
be three vectors. If
and
are both perpendicular to the vector
and
.
= 10 , then what is the magnitude of
?
[NDA II 2017]
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