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Complex Numbers question

2021 · 27 Aug · Shift 1 · Q26
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  5. /2021 · 27 Aug · Shift 1 · Q26

Complex Numbers question

2021 · 27 Aug · Shift 1 · Q26

JEE MainMathematicsComplex NumbersMCQ+4 / −1
If S={z∈C:z−iz+2i∈R}S = \left\{ {z \in C:{{z - i} \over {z + 2i}} \in R} \right\}S={z∈C:z+2iz−i​∈R}, then :
  1. A
    S contains exactly two elements
  2. B
    S contains only one element
  3. C
    S is a circle in the complex plane
  4. D
    S is a straight line in the complex plane
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