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Math Help - valid or invalid argument?

  1. #1
    Junior Member
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    Exclamation valid or invalid argument?

    I need help on this problem!

    Some investments are risky.
    Real estate is an investment.
    Therefore Real estate is risky.

    is the argument valid or invalid?
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  2. #2
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    pickslides's Avatar
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    Invalid because of the word highlighted in red.

    Some investments are risky.
    Real estate is an investment.
    Therefore Real estate is risky.

    Real Estate may not be a risky investment. The following would be valid

    All investments are risky.
    Real estate is an investment.
    Therefore Real estate is risky.
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  3. #3
    Junior Member
    Joined
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    Quote Originally Posted by pickslides View Post
    Invalid because of the word highlighted in red.

    Some investments are risky.
    Real estate is an investment.
    Therefore Real estate is risky.

    Real Estate may not be a risky investment. The following would be valid

    All investments are risky.
    Real estate is an investment.
    Therefore Real estate is risky.
    Thank you!!
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