3
19 ○ 8 11, what is ○? =
7
22 ○ 2 11, what is ○? =
9
42 ○ 46 88, what is ○? =
13
81 ○ 9 9, what is ○? =
14
10 ○ 32 42, what is ○? =
16
9 ○ 8 72, what is ○? =
17
5 ○ 7 35, what is ○? =
18
48 ○ 19 67, what is ○? =
19
86 ○ 50 36, what is ○? =
20
60 ○ 12 5, what is ○? =