Sign in out References Mailings Review View Help Table Design La-out Tell me what you want to do 12 A Aa AaBbCcDd AaBbCcI AaBbCo AaBbCCC AaBbCCD A X X A Heading 3 1 Normal Heading 1 Heading 2 Heading 4 Font Paragraph Styles A set of propositions is consistent if there is an assignment of truth values to each of the variables in the propositions that makes each proposition true. Is the following set of propositions consistent? The system is in multiuser state if and only if it is operating normally. If the system is operating normally, the kernel is functioning. The kernel is not functioning or the system is in interrupt mode. If the system is not in multiuser state, then it is in interrupt mode. The system is in interrupt mode. Prove that up is a tautology using propositional equivalence and the laws of logic