{
  "name": "Cardinality of sets",
  "order": 13,
  "challenges": [
    {
      "id": "59a5801209a6acac5983b610",
      "title": "Sets with equal cardinalities",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    },
    {
      "id": "59a5801209a6acac5983a946",
      "title": "Countable and uncountable sets",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    },
    {
      "id": "59a5801209a6acac5983a947",
      "title": "Comparing cardinalities",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    },
    {
      "id": "59a5801209a6acac5983a948",
      "title": "The Cantor-Bernstein-Schroeder Theorem",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    }
  ]
}