GUJCET 2023 Math Solved Paper

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Question : 23 of 40
 
Marks: +1, -0
For the vectors
→
a
=
^
i
+
^
j
+
^
k
,
→
b
=
^
i
+2
^
j
+3
^
k
,(
→
a
+
→
b
)
â‹…(
→
a
−
→
b
)
=

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