Robloxlover594 Robloxlover594 01-05-2020 Mathematics contestada what is the greatest common factor? 7*7*9*11*13 7*9*9*11*13 7*9*11*11*13 (a) 7*9*11*13 (b) 7*7*9*9*11*11*13 (c) 7*7*9*9*11*11*13*13 (d) 7*7*7*7*9*9*9*9*11*11*11*11*13*13*13