U 1 H 6 STT complete.doc

U 1 H 6 STT complete.doc - UNIT ONE HANDOUT 4 Dr S.DEO...

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UNIT ONE HANDOUT 4 …. Dr. S.DEO Proposition is a statement that is descriptive or indicative. Propositions are expressed through language and they have a truth value. 1. India is an Asian country. 2. Andy Murray won last year’s men’s Singles Wimbledon title. 3. All food may not be tasty but is nourishing. 4. Some people are either liars or ignorant of facts. 5. If people are dishonest then they have no right to voice their opinions. 6. If and only if one is honest and is aware of the facts then can he voice his opinion. 7. Organic food is not available easily in markets. Propositional Connectives or Logical Operators. Not ~ And o Either Or v If … then If and only if then. Truth Values of Logical Connectives. 1. ‘And’ is true when both the component statements are true. 2. ‘Or’ is true when at least one of the component statements is true. 3. ‘If… then’ is false when the condition is true but the consequent is false.
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