SEOUL, Nov 1 (Reuters) - Following are South Korea"s preliminary export and import figures for October, released by the government on Monday (rounded): *Oct *Sept Balance ($ billion) +1.69 +4.21 Exports ($ billion) 55.55 55.83 (% growth vs yr ago) +24.0 +16.7 Imports ($ billion) 53.86 51.62 (% growth vs yr ago) +37.8 +31.0 Avg exports per working day +24.0 +27.9 (% growth vs yr ago) * Revised on Oct. 15 NOTES: - October exports jumped 24.0% from a year earlier, government data showed on Monday, marking a 12th straight month of expansion. - Reuters poll: Overseas sales in October were seen growing 27.0% from a year ago, the median forecast in a poll of 14 economists showed. - There were 21 working days last month, the same as the comparable month of 2020. (Reporting by Cynthia Kim Editing by Shri Navaratnam)