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NDA Math Vector Algebra

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Question : 2 of 101
 
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Let
→
a
,
→
b
 and
→
c
 be unit vectors lying on the same plane. What is
{(3
→
a
+2
→
b
)×(5
→
a
−4
→
c
)}â‹…(
→
b
+2
→
c
)
equal to ?
[NDA II 2022]
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