Purchase Solution

Is this an invalid or valid syllogism?

Not what you're looking for?

Ask Custom Question

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

Is this an invalid or valid syllogism?

Purchase this Solution
Solution Summary

Syllogisms are assessed in terms of validiity.

Solution Preview

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

Purchase this Solution
Free BrainMass Quizzes
Descartes Meditations on First Philosophy

Short quiz relating to Descartes

The World Health Organization

This quiz assesses the students knowledge about the World Health Organization. Although listed under “Philosophy” it is relevant to health care, political science, pre-med, and social scientist students as well.

View More Free Quizzes
Related BrainMass Solutions

  • invalid or valid syllogism

    86160 Invalid or valid syllogisms are labeled. Some sticky substances are yucky things. All taffy is a sticky substance. Therefore, some taffy is a yucky thing. Is this an invalid or valid syllogism? This is not a valid syllogism.

  • Valid or Invalid Syllogism

    180400 Valid or Invalid Syllogism Are this syllogism valid or invalid? Some sticky substances are yucky things. All taffy is a sticky substance. Therefore, some taffy is a yucky thing. Also, how do I end this one?

  • Invalid or valid syllogisms

    86161 Is this an invalid or valid syllogism? All items made of gold are expensive items. Some rings are items made of gold. Therefore, some rings are expensive items. Is this an invalid or valid syllogism? Valid.

  • Testing syllogisms' validity using Venn diagrams

    4791 SYLLOGISM VALIDITY TESTING EXERCISE SYLLOGISM VALIDITY TESTING EXERCISE To be a valid syllogism, the conclusion must be proven by the reasons. Carefully study the following syllogisms and decide if they are valid or invalid: 1.

  • Enthymemes and Syllogisms

    593766 Enthymemes in Everyday Life Identify an example of an enthymeme you encountered this week in the media or in a conversation. - Create a syllogism based on the enthymeme. - Determine whether the syllogism is valid or invalid and explain why.

  • Euler diagrams, logic statements, and truth tables

    Create an Euler diagram to determine whether the syllogism is valid or invalid. All grocery stores are open until 10 p.m. The store on the corner is open until 10 p.m. The store on the corner is a grocery store. 2.

  • fallacy of the Converse

    in symbols is P or Q not P ------------- Therefore, Q The argument is valid by Disjunctive Syllogism Let P="Sally is on vacation" Q="Tom is at work" The third argument in symbols is P --> Q not Q ---------------- Therefore, not

  • Valid syllogisms

    45843 Valid Syllogisms This job offers help with syllogisms, determining if the problem is valid or not and why. To be a valid syllogism, the conclusion must be proven by the reasons.

  • Logic - Validity of Arguments

    This tree has green leaves. ------------------------------------------------------------- Therefore:. This tree does not produce oxygen. 2) Use Euler Diagrams to determine whether the following syllogism is valid or invalid.

View More Related Solutions