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JEE Main 8 Apr 2024 Shift 2 Solved Paper

Section: Mathematics
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Question : 2 of 90
 
Marks: +1, -0
Let
→
a
=
^
i
+2
^
j
+3
^
k
,‌‌
→
b
=2
^
i
+3
^
j
−5
^
k
‌‌ and
→
c
=3
^
i
−
^
j
+λ
^
k
 be three vectors. Let
→
r
 be a unit vector along
→
b
+
→
c
. If
→
r
.
→
a
=3, then 3λ is equal to :
[8 Apr 2024 Shift 2]
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