Question
If z1, z2, z3 are complex numbers such that∣z1∣=∣ z2 ∣=∣ z3 ∣=
, thus, ∣ z1 + z2 + z3 ∣ is
- equal to 1
- less than 1
- greater than 3
- equal to 3
The correct answer is: equal to 1
Hence 
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and 
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and the 
axis is
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, is
