11. Найдите наибольший общий делитель чисел: 40 и 50; 8 и 10; 30 и 70; 100 и 16; 9 и 3; 46 и 58; 81 и 27; 85 и 75; 9 и 18; 12 и 26; 7 и 21; 36 и 81; 25 и 15; 105 и 21; 34 и 85; 22 и 88; 6 и 36; 18 и 32; 25 и 145; 36 и 27; 63 и 72; 30 и 90; 32 и 64; 36 и 18.

НОД: \(40,50=10\); \(8,10=2\); \(30,70=10\); \(100,16=4\); \(9,3=3\); \(46,58=2\); \(81,27=27\); \(85,75=5\).

\(9,18=9\); \(12,26=2\); \(7,21=7\); \(36,81=9\); \(25,15=5\); \(105,21=21\); \(34,85=17\); \(22,88=22\).

\(6,36=6\); \(18,32=2\); \(25,145=5\); \(36,27=9\); \(63,72=9\); \(30,90=30\); \(32,64=32\); \(36,18=18\).