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Vector Algebra

Section: Mathematics
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Question : 25 of 38
 
Marks: +1, -0
If
→
a
 and
→
b
 are vectors such that |
→
a
+
→
b
| = √29 and
→
a
×(2
^
i
+3
^
j
+4
^
k
) = (2
^
i
+3
^
j
+4
^
k
)×
→
b
, then a possible value of (
→
a
+
→
b
).(−7
^
i
+2
^
j
+3
^
k
) is
[JEE Adv 2012 P2]
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