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Question

if ¯¯¯aׯ¯b=¯¯bׯ¯c=¯¯cׯ¯¯a, then ¯¯¯a+¯¯b+¯¯c=

A
0
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B
1
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C
¯¯¯0
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D
2
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Solution

The correct option is C ¯¯¯0
a×b=b×c
(a+c)×b=0
So (a+c)b
a+c=Kb1
b×c=c=0
(b+a)c
b+a=Kc2
Compare 1 & 2
K=1 or K=1
So ^b+^a+c=0

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