1) 6 = 2 * 3; 27 = 3 * 3 * 3; 42 = 2 * 3 * 7
НОК(6;27;42)= 2 * 3 * 3 * 3 * 7 = 378
2) 5 = 5; 20 = 2 * 2 * 5; 35 = 5 * 7; НОК(5;20;35)= 5 * 2 * 2 * 7 = 140
3) 16 = 2 * 2 * 2 * 2; 28 = 2 * 2 * 7; 44 = 2 * 2 * 11; НОК(16;28;44)= 2 * 2 * 2 * 2 * 7 * 11 = 1232
4) 18 = 2 * 3 * 3; 27 = 3 * 3 * 3 ; 36 = 2 * 2 * 3 * 3; НОК(18;27;36)= 2 * 3 * 3 *3 2 = 108