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     EduGorilla 
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    Kha-kha is an obscure island which is inhabited by two types of people; the ‘Yes’ type and the ‘No’ type. Natives of type ‘Yes’ ask only questions the right answer to which is ‘Yes’, while those of type ‘No’ ask only questions the right answer to which is ‘No’. For example, the ‘Yes’ type will ask questions like "Is 2 plus 2 equal to 4?", while the ‘No’ type will ask questions like "Is 2 plus 2 equal to 5?"
    The following question is based on your visit to the island Kha-kha.


    Kevin and Kumar and brothers from the island. Kumar asks you, "Is at least one of us is of type ‘No’?"
    You can conclude that

    Options :-

    1. Kevin is 'No', Kumar is 'Yes'
    2. both are 'Yes'
    3. Kevin is 'Yes', Kumar is 'No'
    4. both are 'No'
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