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10 questions
83 + 82 = ?
165
85
81
21
123
61
21
32
53
63
54
64
107
137
125
133
97 − 94 = ?
03
911
93
3
62
63
53
67
1211
1210
3611
127
97
93
99
92
32
94
95
91
42
41
1
45
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