Fighting Mother-in-law riddle


Man comes home and what does he see? Mother-in-law came over.
I don’t know how but they started a fight. About what is not important at all.

Mother-in-law: You just lie all the time.
Man: No way…

Mother-in-law: You don’t tell a sentence without lying!
Man: Don’t be ridiculous!

Mother-in-law: Let’s try it: tell me one true sentence.
Man: Ok but you will get out after.

Mother-in-law: If you tell me true sentence I’ll go but if you will lie again I will stay. I promise I will!

Man thought for a while and than told her one sentence. Mother-in-law suddenly realized that to keep her promise she has to hang herself.

What did the man tell her?

SherlockHolmes Expert Asked on 31st December 2016 in Logic Puzzles.
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  • 2 Answer(s)

    Yet another version of the ‘hang me – shoot me’ paradox puzzle. Just tell that the person would do what (s)he had promised to do if the statement is wrong. Then, if the statement is deemed true, the person will have to do the opposite, which, in turn, would make the sentence false, thus landing him / her in paradox.

    Viji_Pinarayi Expert Answered on 6th January 2017.
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    He says “Mom You are staying here”…..

    If she stays she looses, and has to go.

    If she has to win she has to prove him wrong and she has to go….

    vipunita15 Guru Answered on 13th January 2017.
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