Answer 1a =23 , 1b =7, 1c = 18
Answer 2a = 24 , 2b = 54 , 2c = 9
Answer 3 = e(Mary)
Answer 4a = -5, 4b = 4
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Answer 1a =23 , 1b =7, 1c = 18
Answer 2a = 24 , 2b = 54 , 2c = 9
Answer 3 = e(Mary)
Answer 4a = -5, 4b = 4