Valid and Invalid Arguments in Logic using truth tables part 2

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Thank you alot I appreciate this video it had taken me alot of time to understand but when you worked it out I understood

creat
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This helps me a lot, our midterm is later na!! Thank you so much for this! ❤🎉

renalynf.jurilla
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Is there a case that these arguments can be valid? Thankyouu

troyrecto
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Thank you so much! I am cramming before my final tomorrow!

alejandra
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Thank you sir, you are a life saver ☺️

HSNTV-bdus
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what if i have for example 5 variables? do i need to write all 32 rows? is there a way to solve this without the truth table?

baldaiomir
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Check it is valid or invalid??
If the two sides of the triangle are equal then opposite angles are not equal .Therefore opposite angles are not equal

vatsalgupta
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That was really helpful, thanks to u!!
but I couldn't understand neither the falsity of the 3rd row (the 1st example)🤔nor the whole second example especially with the final answer column. can someone plz explain that for me 😵

missyellow
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The second argument could be expressed like this g=> not r and not r therfore g then you could say that the structure of the argument is the same as in a hence argument b is invalid

IsoStream