1.Odd one out: 44, 79, 38, 2
4479382
2.Odd one out: 4, 81, 94, 9
481949
3.Odd one out: 44, 19, 82, 26
44198226
4.Odd one out: 65, 18, 12, 52
65181252
5.Odd one out: 81, 94, 36, 9
8194369
6.Odd one out: 49, 21, 36, 64
49213664
7.Odd one out: 9, 84, 14, 91
9841491
8.Odd one out: 46, 81, 24, 74
46812474
9.Odd one out: 74, 44, 34, 47
74443447
10.Odd one out: 18, 42, 98, 28
18429828
11.Odd one out: 96, 72, 97, 48
96729748
12.Odd one out: 26, 38, 15, 22
26381522
13.Odd one out: 30, 25, 4, 81
3025481
14.Odd one out: 24, 8, 21, 28
2482128
15.Odd one out: 68, 77, 34, 46
68773446