UPSC NDA I 2011 Mathematics Paper

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Question : 66 of 120
 
Marks: +1, -0
Let p,q,r,s be respectively the magnitudes of the vectors 3
∧
i
−2
∧
j
,2
∧
i
+2
∧
j
+
∧
k
,4
∧
i
−
∧
j
+
∧
k
,2
∧
i
+2
∧
j
+3
∧
k
.
Which one of the following is correct?
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