а) 56 = 2 * 2 * 2 * 7 70 = 2 * 5 * 7НОК (56 и 70) = 2 * 2 * 2 * 5 * 7 = 280б) 78 = 2 * 3 * 13 792 = 2 * 2 * 2 * 3 * 3 * 11НОК (78 и 792) = 2 * 2 * 2 * 3 * 3 * 11 * 13 = 10 296в) 320 = 2 * 2 * 2 * 2 * 2 * 2 * 5720 = 2 * 2 * 2 * 2 * 3 * 3 * 5НОК (320 и 720) = 2 * 2 * 2 * 2 * 2 * 2 * 3 * 3 * 5 = 2 880г) 252 = 2 * 2 * 3 * 3 * 7 840 = 2 * 2 * 2 * 3 * 5 * 7НОК (252 и 840) = 2 * 2 * 2 * 3 * 3 * 5 * 7 = 2 520д) 42 = 2 * 3 * 7 63 = 3 * 3 * 7 НОК (42 и 63) = 2 * 3 * 3 * 7 = 126е) 120 = 2 * 2 * 2 * 3 * 5 324 = 2 * 2 * 3 * 3 * 3 * 3НОК (120 и 324) = 2 * 2 * 2 * 3 * 3 * 3 * 3 * 5 = 3 240ж) 675 = 3 * 3 * 3 * 5 * 5 945 = 3 * 3 * 3 * 5 * 7НОК (675 и 945) = 3 * 3 * 3 * 5 * 5 * 7 = 4 725з) 924 = 2 * 2 * 3 * 7 * 11 396 = 2 * 2 * 3 * 3 * 11НОК (924 и 396) = 2 * 2 * 3 * 3 * 7 * 11 = 2 772