WINSEM2018-19_STS2002_SS_TT621_VL2018195001084_Reference Material I_Syllogisms.pdf - SYLLOGISMS SYLLOGISMS Introduction Key Points INTRODUCTION

WINSEM2018-19_STS2002_SS_TT621_VL2018195001084_Reference Material I_Syllogisms.pdf

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SYLLOGISMS Schedule a Mock Interview at facebook.com/ethnus © 2018 Ethnus Consultancy Services Pvt. Ltd. All rights reserved. This material or any portion thereof may not be reproduced or used in any manner. To report violation, ask query, or provide feedback e-mail us at [email protected] SYLLOGISMS Introduction Key Points INTRODUCTION Syllogisms are the logical arguments that is composed of two premises (major premises and minor premises) followed by a conclusion. Let us try to understand the concept with the help of an example. We start with a general argument “All men are mortal,” we know that “John is a man” so “John is mortal.” It is a deductive approach to reason and is based on deducing specific conclusions from general facts. We notice in the above example that Syllogism is a three-part set of statements; a major statement or premise, a minor statement or premise and a conclusion that is deduced. Therefore, “All men are mortal” is a major statement or premise which stands as a general fact. “John is a man” is minor statement or premise that is specific and “John is mortal” is the logical conclusion deduced from the two prior statements. For each syllogism you must decide whether the conclusion is valid or invalid by determining whether it follows logically from the premises without the need for any other information A useful tool for solving syllogisms is a Venn Diagrams. Venn diagrams enable simple relations between the different statements to results in a valid conclusion of the syllogism. You can cancel out common terms in two statements given, then on the remaining terms apply the syllogisms rules and solve. E.g. Some dogs are goats. All goats are cows. out “goats” which leaves us with Some dogs are…all are cows.
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SYLLOGISMS Schedule a Mock Interview at facebook.com/ethnus © 2018 Ethnus Consultancy Services Pvt. Ltd. All rights reserved. This material or any portion thereof may not be reproduced or used in any manner. To report violation, ask query, or provide feedback e-mail us at [email protected] Important words remaining are SOME and ALL in that order. SOME + ALL = SOME, hence conclusion is SOME dogs are cows. Avoid using common knowledge as Syllogisms questions usually state unnatural statements. KEY POINTS Rules for syllogisms: Every deduction should have exactly 3 distinct terms. The middle term (common term) should be distributed (known entirely) at least once in the premise.
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  • Winter '17
  • sathya raja shekaran
  • Logic, Deductive Reasoning, Conclusion, All rights reserved, logical consequence, Traditional logic

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