Yes. If you construct the truth table for an invalid argument you will find at least a bad line, where all the premises will be true and conclusion false.
By the convention, which we are using (Copi) an argument is valid or invalid. If there exist a substitution instance that makes all the premises true and conclusion false, the argument is invalid.
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Thanks Sir, very well explained.
Thank you so much sirji for making such informative video.
Thank you for appreciation and welcome aboard.
Thank you sir...this is very helpful
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I appreciate your efforts
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Thank you ❣️
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Thank you sir for helping me
welcome
Can you explain this using truth tables?
Yes. If you construct the truth table for an invalid argument you will find at least a bad line, where all the premises will be true and conclusion false.
Thank you ❤️ sir
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Sir please teach truth tree
th-cam.com/video/mIeG4SbEUvM/w-d-xo.html
So, is the argument true or false?
By the convention, which we are using (Copi) an argument is valid or invalid. If there exist a substitution instance that makes all the premises true and conclusion false, the argument is invalid.
Sir truth tree method video?
th-cam.com/video/B456sRznbV8/w-d-xo.html
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