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20 questions
1+3=?
2
3
4
5
5+4=?
7
8
9
10
9+3=?
9
12
13
14
7+6=?
13
11
12
15
7+4=?
11
12
13
14
6+2=?
5
6
7
8
2+5=?
6
7
8
9
8+4=?
12
13
14
15
5+5=?
8
9
10
15
9+6=?
12
13
14
15
2+7=?
6
7
8
9
8+8=?
14
15
16
17
8+7=?
13
14
15
16
5+7=?
11
12
13
14
6+8=?
12
13
14
15
6+6=?
12
13
14
15
5+6=?
10
11
12
13
4+4=?
5
6
7
8
9+7=?
14
15
16
17
8+5=?
12
13
14
15
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