4=2*218=2*9=2*3*324 = 2 * 12 = 2 * 2 * 6 = 2 * 2 * 2 * 3.НОК (4, 18, 24) = 2 * 2 * 3 * 3 * 2 = 72.Ответ: 72.2) 5 = 5 * 1;20 = 2 * 10 = 2 * 2 * 5;35 = 5 * 7.НОК (5, 20, 35) = 5 * 2 * 2 * 7 = 140.Ответ: 140.3) 6 = 2 * 3;24 = 2 * 12 = 2 * 2 * 6 = 2 * 2 * 2 * 3;36 = 2 * 18 = 2 * 2 * 9 = 2 * 2 * 3 * 3.НОК (6, 24, 36) = 2 * 3 * 2 * 2 * 3 = 72.Ответ: 72.4) 8 = 2 * 4 = 2 * 2 * 2;28 = 2 * 14 = 2 * 2 * 7;42 = 2 * 21 = 2 * 3 * 7.НОК (8, 28, 42) = 2 * 2 * 2 * 7 * 3 = 168.Ответ: 168.