2
39 ○ 15 24, what is ○? =
3
12 ○ 5 60, what is ○? =
4
28 ○ 49 77, what is ○? =
8
10 ○ 6 60, what is ○? =
10
2 ○ 9 18, what is ○? =
11
53 ○ 32 21, what is ○? =
13
12 ○ 7 84, what is ○? =
14
3 ○ 4 12, what is ○? =
16
7 ○ 10 70, what is ○? =
18
5 ○ 4 20, what is ○? =
19
48 ○ 29 19, what is ○? =