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JEE Main 9 Jan 2019 Shift 1 Solved Paper

Section: Mathematics
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Question : 45 of 90
 
Marks: +1, -0
Let
→
a
 =
^
i
−
^
j
 ,
^
b
 =
^
i
+
^
j
+
^
k
 and
→
c
 be a vector such that
→
a
×
→
c
+
→
b
 =
→
0
 and
→
a
.
→
c
 = 4 , then |
→
c
| is equal to :
[9-Jan-2019 Shift 1]
Validate
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