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Let |z 1 – 8 – 2i| ≤ 1 and |z 2 – 2 + 6i| ≤ 2, z 1 , z 2 ∈ C. Then the minimum value of |z 1 – z 2 | is :

1. 3
2. 7
3. 13
4. 10

Correct answer: 7

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