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Math Help - Indirect proof

  1. #1
    Junior Member
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    Indirect proof

    For the sake of argument accept each of the following hypotheses and then give a logical completion for each conclusion.

    1. hypothesis: All boys like to play basketball. My brother is fourteen years old.
    CONCLUSION: MY BROTHER______________________
    MY ANSWER: MY BROTHER IS FOURTEEN YEARS OLD WHO LIKES TO PLAY BASKETBALL.....


    BOOK: GEOMETRY BY EDWIN E. MOISE AND FLOYD DOWNS....

    Can any one please check my work? Can you please give me the idea or the reason...thanks in advance
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by jam2011 View Post
    For the sake of argument accept each of the following hypotheses and then give a logical completion for each conclusion.

    1. hypothesis: All boys like to play basketball. My brother is fourteen years old.
    CONCLUSION: MY BROTHER______________________
    MY ANSWER: MY BROTHER IS FOURTEEN YEARS OLD WHO LIKES TO PLAY BASKETBALL.....


    BOOK: GEOMETRY BY EDWIN E. MOISE AND FLOYD DOWNS....

    Can any one please check my work? Can you please give me the idea or the reason...thanks in advance
    You need the additional premises: "All brothers are male", "All males who are 14 years old are boys"

    Then the conclusion "MY BROTHER LIKES TO PLAY BASKETBALL" follows.

    CB
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  3. #3
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    thank you so much sir....i can manage now...
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