{ "name": "Permutation groups", "order": 5, "challenges": [ { "id": "59a5801209a6acac5983b625", "title": "Definitions and notation", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] }, { "id": "59a5801209a6acac5983a999", "title": "Dihedral groups", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] } ] }