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(12-0) / (1-0) =12 | ||
(22-12)/ (2-1) = 10 | ||
(30-22) / (3-2) = 8 | ||
(36-30) / (4-3) = 6 | ||
(40-36) / (5-4) = 4 | ||
(42-40) / (6-5) = 2 | ||
(42-42) / (7-6) = 0 | ||
(40-42) / (8-7) = -2 |
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