{
  "name": "Proofs Involving Sets",
  "order": 8,
  "challenges": [
    {
      "id": "59a5801209a6acac5983b605",
      "title": "How to prove a∈A",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    },
    {
      "id": "59a5801209a6acac5983a925",
      "title": "How to prove A⊆B",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    },
    {
      "id": "59a5801209a6acac5983a926",
      "title": "How to prove A=B",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    },
    {
      "id": "59a5801209a6acac5983a927",
      "title": "Examples: Perfect Numbers",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    }
  ]
}