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UPSC NDA II 2024 Mathematics Paper

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Question : 55 of 120
 
Marks: +1, -0
The vectors
→
a
,
→
b
 and
→
c
 are of the same length. If taken pairwise they form equal angles. If
→
a
=
^
𝑖
+
^
𝑗
 and
→
b
=
^
𝑗
+
^
k
, then what can
→
c
 be equal to?
I.
^
1
+
^
k

II. ‌
−
^
i
+4
^
j
^
−k
^
k
3
Select the correct answer using the code given below. 
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