Ответ:
\(6\cdot4=24\); \(4\cdot4=16\); \(2\cdot4=8\); \(8\cdot4=32\); \(4\cdot5=20\); \(4\cdot7=28\); \(4\cdot10=40\); \(4\cdot8=32\); \(4\cdot6=24\); \(10\cdot4=40\).
\(6\cdot4=24\); \(4\cdot4=16\); \(2\cdot4=8\); \(8\cdot4=32\); \(4\cdot5=20\); \(4\cdot7=28\); \(4\cdot10=40\); \(4\cdot8=32\); \(4\cdot6=24\); \(10\cdot4=40\).