An octal decoder with active-LOW outputs will output seven LOWs and one HIGH for each combination of inputs is b. false
An octal decoder with active-LOW outputs will output one LOW and seven HIGHs for each combination of inputs. This is because active-LOW outputs mean that the output is normally HIGH and only goes LOW when the corresponding input is active. So, for each input combination, only one output will be LOW, and the other seven will be HIGH.
In an octal decoder with active-LOW outputs, the outputs are active-LOW, which means they are inverted.
Therefore, the decoder will output seven HIGHs and one LOW for each combination of inputs.