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串聯 2+13=15 2+13+24=39 2+13+24+38=77 2+24=26 2+38=40
2+24+38=64 2+13+38=53
13+24=37 13+24+38=75 13+38=51
24+38=62

並聯(1) 1/2+1/13=26/15 (2) 1/2+1/24=24/13 (3) 1/2+1/38=38/20
(4) 1/2+1/13+1/24 (5) 1/2+1/13+1/24+1/38
(6) 1/2+1/24+1/38 (7) 1/2+1/13+1/38
(8) 1/13+1/24 (9) 1/13+1/24+1/38 (10) 1/13+1/38
(11)1/24+1/38

先並再串 (1)+24 (1)+38 (1)+24+38 (2)+13 (2)+38 (2)+13+38
(3)+13 (3)+24 (3)+13+24 (4)+38 (6)+13 (7)+24 (8)+2 (8)+38
(8)+2+38 (9)+2 (10)+2 (10)+24 (10)+2+24 (11)+2 (11)+13 (11)+2+13

參考資料 我