1) 12 = 2 * 2 * 3 * 1;
18 = 2 * 3 * 3 * 1;
НОК (12; 18) = 2 * 3 * 3 * 2 * 1= 36;
2) 8 = 2 * 2 * 2 * 1;
16 = 2 * 2 * 2 * 2 * 1;
НОК (8; 16) = 2 * 2 * 2 * 2 * 1;
3) 9 = 3 * 3 * 1;
14 = 2 * 7 * 1;
НОК (9; 14) = 2 * 7 * 3 * 3 * 1 = 126;
4) 36 = 2 * 2 * 3 * 3 * 1;
48 = 2 * 2 * 2 * 2 * 3 * 1;
НОК (36; 48) = 2 * 2 * 2 * 2 * 3 * 3 * 1 = 144;
5) 210 = 2 * 3 * 5 * 7 * 1;
350 = 2 * 5 * 5 * 7 * 1;
НОК (210; 350) = 2 * 5 * 5 * 7 * 3 * 1 = 1050;
6) 12 = 2 * 2 * 3 * 1;
15 = 3 * 5 * 1;
18 = 2 * 3 * 3 * 1;
НОК (12; 15; 18) = 2 * 3 * 3 * 2 * 5 * 1 = 180.