# who lies? (propositional logic)

### who lies? (propositional logic)

A says B&C tell the truth
B says A tell the truth
C says A lies and B tells the truth

A's.satement.is.true B's C's
A T T F
B T T T -> B tells the truth
C T T

I have to use propositional logic to make out who lies and who tells the truth. I got to B telling the truth, but it all seems to contradict
yuu00

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### Re: who lies? (propositional logic)

If A says B or C tells the truth, then B tells the truth, A tells the truth and C lies.

The only option as it stands is that all 3 lie, as B/C directly contradict and A has both B and C True when they both can't be true.
Guest

### Re: who lies? (propositional logic)

Hi All Alastair Lee Here, from New Zealand,
I always look for fresh and updated knowledge regarding the swimming pool.
I found this forum today on google and it helped me a lot. I was wondering if I could join this forum to share my limited knowledge about the swimming pool.

By the way, I have already worked as a volunteer with a company that provides services about the swimming pool for almost two years.

Looking forward for you guys to welcome me.

Thanks
Regards.

Alastair Lee

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