Ответ:
1) \(1011_2\cdot11_2=100001_2\).
Проверка: \(1011_2=11_{10}\), \(11_2=3_{10}\); \(11\cdot3=33\), а \(33_{10}=100001_2\).
2) \(1001_2\cdot101_2=101101_2\).
Проверка: \(1001_2=9_{10}\), \(101_2=5_{10}\); \(9\cdot5=45\), а \(45_{10}=101101_2\).
1) \(1011_2\cdot11_2=100001_2\).
Проверка: \(1011_2=11_{10}\), \(11_2=3_{10}\); \(11\cdot3=33\), а \(33_{10}=100001_2\).
2) \(1001_2\cdot101_2=101101_2\).
Проверка: \(1001_2=9_{10}\), \(101_2=5_{10}\); \(9\cdot5=45\), а \(45_{10}=101101_2\).