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JEE Main 2017 Solved Paper Solved Paper

Section: Mathematics
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Question : 42 of 90
 
Marks: +1, -0
Let
→
a
=2
∧
i
+
∧
j
−3
∧
k
 and
→
b
=
∧
i
+
∧
j
.Let
→
c
 be a vector such that |
→
c
−
→
a
|=3,|(
→
a
×
→
b
)×
→
c
|=3 and the angle between
→
c
 and
→
a
×
→
b
 be 30°.Then
→
a
⋅
→
c
 is eqaula to :
[Main 2017]
Validate
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