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    Is this an invalid or valid syllogism?

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    All flies are winged creatures.
    All butterflies are winged creatures.
    Therefore, all butterflies are flies.

    Is this an invalid or valid syllogism?

    © BrainMass Inc. brainmass.com October 9, 2019, 6:21 pm ad1c9bdddf
    https://brainmass.com/philosophy/logic-critical-thinking/is-this-an-invalid-or-valid-syllogism-86162

    Solution Preview

    Invalid. The category of winged creatures can include both all flies and all butterflies without these classes ...

    Solution Summary

    Syllogisms are assessed in terms of validiity.

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