Odd one out
4/10
12/30
2/5
9/20
Odd one out
21/30
7/10
42/60
72/90
Odd one out
5/15
1/3
8/21
6/18
Odd one out
28/49
8/15
4/7
12/21
Odd one out
40/56
55/66
5/6
15/18
Odd one out
22/33
16/21
16/24
2/3
Odd one out
3/12
7/24
1/4
4/16
Odd one out
80/100
4/5
24/30
32/45
Odd one out
21/27
175/225
164/216
7/9
Odd one out
3/5
24/40
27/35
21/35
Odd one out
75/100
12/16
3/4
21/24
Odd one out
4/8
6/12
14/26
2/4
Odd one out
1/6
3/18
8/54
5/30
Odd one out
21/54
36/96
3/8
15/40
Odd one out
60/100
25/40
125/200
5/8