1.3, 8, 13, 18, 23, 28, 33, 38, 43, 48, 53, 58
2, 6, 10, 14, 18, 22, 26, 30, 34, 38, 42, 46
1, 4, 7, 10, 13, 16, 19, 22, 25, 28, 31, 34
jadi a+ b = 34+ 46 = 80
2.480 : 2 = 240
240 : 2 = 120
120 : 2 = 60
60 : 2 = 30
30 : 2 = 15
Jadi Bilangan ganjil terbesar adalah 15
