1. 210 = 2*3*5*7
84 = 2*2*3*7
НОК (210,84) = 2*3*5*7*2=420
2. 60=2*2*3*5
90 = 2*3*3*5
НОД (60,90) = 2*3*5 = 30
3. 185 = 5*37
230 = 2*5*23
НОД (185,230) = 5
4. 77 = 7*11
91 = 7*13
НОК (77,91) = 7*13*11 = 1001
5. 180 = 2*2*3*3*5
315= 3*3*5*7
НОД (180,315) = 3*3*5 = 45