1) 2 = 2
3 = 3
НОК (2 и 3) = 2 * 3 = 6
2) 4 = 2 * 2 = 2²
5 = 5
НОК (4 и 5) = 2² * 5 = 20
3) 7 = 7
9 = 3²
НОК (7 и 9) = 7 * 3² = 63
4) 10 = 2 * 5
15 = 3 * 5
НОК = 2 * 5 * 3 = 30
5) 12 = 2 * 2 * 3 = 2² * 3
15 = 3 * 5
НОК (12 и 15) = 2² * 3 * 5 = 60
6) 20 = 5 * 2 * 2 = 5 * 2²
30 = 5 * 3 * 2
НОК (20 и 30) = 5 * 2² * 3 = 5 * 4 * 3 = 60