Problem set 10: [1] [2ab-] [2-bc] [3] [4] [5] [6,7a] [7b] [7c] [7de] [7f] [8] [9]

Problem set 10: [1] [2ab-] [2-bc] [3] [4] [5] [6,7a] [7b] [7c] [7de] [7f] [8] [9]