Issue 7 (1980)
Total problems: 47 — Solved: 19, Partially solved: 1, Open: 27.
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The following problem numbers are missing from the official book: 7.9, 7.11, 7.13, 7.14, 7.18, 7.20, 7.29, 7.32, 7.43, 7.46, 7.47.
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9 (missing)
7.10
7.11 (missing)
7.12
7.13 (missing)
7.14 (missing)
7.15
7.16
7.17
7.18 (missing)
7.19
7.20 (missing)
7.21
7.22
7.23
7.24
7.25
7.26
7.27
7.28
7.29 (missing)
7.30
7.31
7.32 (missing)
7.33
7.34
7.35
7.36
7.37
7.38
7.39
7.40
7.41
7.42
7.43 (missing)
7.44
7.45
7.46 (missing)
7.47 (missing)
7.48
7.49
7.50
7.51
7.52
7.53
7.54
7.55
7.56
7.57
7.58