Problem set 1: [1,2ab] [2c] [2d,3ab] [3cde] [4-6] [7a] [7bc] [7d] [7d (cont'd),7e] [8ab] [8c,9a] [9bc] [9d]

Problem set 1: [1,2ab] [2c] [2d,3ab] [3cde] [4-6] [7a] [7bc] [7d] [7d (cont'd),7e] [8ab] [8c,9a] [9bc] [9d]