Issue 15 (2002)
Total problems: 104 — Solved: 23, Partially solved: 6, Open: 75.
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15.1
15.2
15.3
15.4
15.5
15.6
15.7
15.8
15.9
15.10
15.11
15.12
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15.14
15.15
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15.21
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15.23
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15.32
15.33
15.34
15.35
15.36
15.37
15.38
15.39
15.40
15.41
15.42
15.43
15.44
15.45
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15.47
15.48
15.49
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15.51
15.52
15.53
15.54
15.55
15.56
15.57
15.58
15.59
15.60
15.61
15.62
15.63
15.64
15.65
15.66
15.67
15.68
15.69
15.70
15.71
15.72
15.73
15.74
15.75
15.76
15.77
15.78
15.79
15.80
15.81
15.82
15.83
15.84
15.85
15.86
15.87
15.88
15.89
15.90
15.91
15.92
15.93
15.94
15.95
15.96
15.97
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15.103
15.104