NDA Math Vector Algebra

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Question : 39 of 101
 
Marks: +1, -0
If
→
r
=x
⋀
i
+y
⋀
j
+z
⋀
k
then what is
→
r
.(
⋀
i
+
⋀
j
+
⋀
k
)
equal to ?
[NDA II 2018]
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