KwickClips Computer Systems · 40 sec · free
Is a question a proposition?
Short answer. No, it has no truth value.
Can a false statement be a proposition?
Yes, like '7 is even'.
Proposition?
| Sentence | Yes/No | Why |
|---|---|---|
| 7 is even. | Yes | false |
| Is it 5 pm? | No | question |
| Shut the door. | No | command |
Remember
| Proposition: true or false |
| Connectives: ~ ∧ ∨ → ↔ |
Is it five pm? Is that a proposition? No. Seven is even is one, though it is false. A question has no truth value. A command has none either. Two points. It must be true or false. Connectives join them.
This clip is from the full lesson: Propositional Logic: Propositions, Connectives and Valid Formulae — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: ISC Class 11 Computer Science (868), ISC Class 12 Computer Science (868), ISC Class 12 Computer Science (868)
More KwickClips from this lesson
How many rows make p → q false?42 sec
Is p ∧ ~p a tautology?37 sec
Is every valid formula satisfiable?42 secVoice-over is AI-generated; the script is written and checked by Kajal Ma'am. Confirm anything you plan around against your official board document. We never ask for a password or an OTP.