11A relation that is reflexive, symmetric and transitive is an:ATotal orderBPartial orderCEquivalence relationDFunctionView AnswerDiscussWorkspaceReportSaveEasy
12A function that is both one-to-one and onto is:AConstantBInjective onlyCBijectiveDSurjective onlyView AnswerDiscussWorkspaceReportSaveEasy
13A tautology is a statement that is:AAlways falseBUndefinedCSometimes trueDAlways trueView AnswerDiscussWorkspaceReportSaveEasy
14A graph with an Euler circuit has all vertices of:ADegree 1BOdd degreeCEven degree (and is connected)DDegree 0View AnswerDiscussWorkspaceReportSaveEasy