Ответ:

  1. \(11110_2=1\cdot2^4+1\cdot2^3+1\cdot2^2+1\cdot2^1+0\cdot2^0=16+8+4+2=30_{10}\).

  2. \(1000100_2=1\cdot2^6+1\cdot2^2=64+4=68_{10}\).

  3. \(1101100000_2=1\cdot2^9+1\cdot2^8+1\cdot2^6+1\cdot2^5=512+256+64+32=864_{10}\).