1) 11011101₂ = 12^7 + 12^6 + 02^5 + 12^4 + 12^3 + 12^2 + 02^1 + 12^0 = 128 + 64 + 16 + 8 + 4 + 2 + 1 = 223
2) 1101001₂ = 12^6 + 12^5 + 02^4 + 12^3 + 02^2 + 02^1 + 1*2^0 = 64 + 32 + 8 + 1 = 105
3) 100001₂ = 12^5 + 02^4 + 02^3 + 02^2 + 02^1 + 12^0 = 32 + 1 = 33
4) 1101101₂ = 12^6 + 12^5 + 02^4 + 12^3 + 12^2 + 02^1 + 1*2^0 = 64 + 32 + 8 + 4 + 1 = 109
1) 11011101₂ = 12^7 + 12^6 + 02^5 + 12^4 + 12^3 + 12^2 + 02^1 + 12^0 = 128 + 64 + 16 + 8 + 4 + 2 + 1 = 223
2) 1101001₂ = 12^6 + 12^5 + 02^4 + 12^3 + 02^2 + 02^1 + 1*2^0 = 64 + 32 + 8 + 1 = 105
3) 100001₂ = 12^5 + 02^4 + 02^3 + 02^2 + 02^1 + 12^0 = 32 + 1 = 33
4) 1101101₂ = 12^6 + 12^5 + 02^4 + 12^3 + 12^2 + 02^1 + 1*2^0 = 64 + 32 + 8 + 4 + 1 = 109