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- $ A \\\cap B = \\\left\\\{ 1 \\\right\\\}.$
- $ A \\\cap B = \\\left\\\{ {1;3} \\\right\\\}.$
- $ A \\\cap B = \\\left\\\{ {1;5} \\\right\\\}.$
- $ A \\\cap B = \\\left\\\{ {1;3;5} \\\right\\\}.$