Help with basic syllogism


What is the easiest way to solve a syllogism question?

Tips to solve the questions related to Syllogism:

  1. Read the question thoroughly.
  2. Start drawing the Venn diagram.
  3. Follow the sequence of the question while drawing.
  4. Analyse the conclusion from the Venn diagram.
  5. Check for other alternative solutions at the end.


What are the 5 rules for syllogism?

Syllogistic Rules

  • The middle term must be distributed at least once. Error is the fallacy of the undistributed middle.
  • If a term is distributed in the CONCLUSION, then it must be distributed in a premise. …
  • Two negative premises are not allowed. …
  • A negative premise requires a negative conclusion; and conversely.


How can I improve my syllogism?

Tips and Tricks to Solve Syllogism based Questions



Go through all the statements one by one. Understand how you need to draw Venn Diagrams for each of these statements. Try to find out the pattern of the question. Understand how to analyse the conclusion for each statement..

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What are the 6 rules of syllogism?

1) The middle term must be distributed in at least one premise. 2) If a term is distributed in the conclusion, then it must be distributed in a premise. 3) A categorical syllogism cannot have two negative premises. 4) A negative premise must have a negative conclusion.

How do you solve syllogism possibility questions?

If the conclusion is in “Possibility” case then these rules must be applied:

  1. “NO Conclusion” means “Any Possibility is true”.
  2. “Only A is B” means All B are A.
  3. “At least Some A are B” means “Some A are B”.
  4. Words like Can be / May be denotes Possibility. For eg. All A can be B. means All A are B is a possibility.


How do you solve a syllogism with 3 statements?

In case of three statement syllogism, we accept the conclusion statement (A to C) as valid, then try to find out its parents (those question statements A to B then B to C). Then, we try to get a valid conclusion out of those two-question statements and see if it matches with the given conclusion state in answer.

How do you solve categorical syllogism?

Quote from the video:
Youtube quote: In this video on categorical arguments and reasoning I'll explain where to put the X for those categorical syllogisms using the Venn diagram method that use an X in its diagramming.

What are the 3 types of syllogism?

Three kinds of syllogisms, categorical (every / all), conditional (if / then), and disjunctive (either / or).

What are the 24 valid syllogisms?

The first figure: AAA, EAE, AII, EIO, (AAI), (EAO). The second figure: AEE, EAE, AOO, EIO, (AEO), (EAO). The third figure: AAI, EAO, AII, EIO, IAI, OAO. The fourth figure: AAI, AEE, EAO, EIO, IAI, (AEO).

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How do you test syllogism?

To sum up: To test a syllogism for validity, Venn diagram the premises. Inspect the diagram. If the diagram already represents the conclusion, then the argument is valid. If a representation of the conclusion is absent, the argument is invalid.

How do you teach syllogism?

Quote from the video:
Youtube quote: So all a and B should be drawn like this. So all a or B. And the third statement no a is B. So friends the meaning of no a is B there is no connection between a and B so we can draw.

How do you test a syllogism?

To test the validity of a categorical syllogism, one can use the method of Venn diagrams. Since a categorical syllogism has three terms, we need a Venn diagram using three intersecting circles, one representing each of the three terms in a categorical syllogism.

How do I know if a syllogism is valid?

A syllogism is valid (or logical) when its conclusion follows from its premises. A syllogism is true when it makes accurate claims – that is, when the information it contains is consistent with the facts. To be sound, a syllogism must be both valid and true.

How do you draw a Venn diagram for a syllogism?

Quote from the video:
Youtube quote: This is the first one so in this figure 1.1 the circle denotes both the cars and the trucks. So this is cars as well as trucks. Means all the cars are trucks and all the trucks are cars.

Is syllogism a valid or invalid?

A valid syllogism is one in which the conclu- sion must be true when each of the two premises is true; an invalid syllogism is one in which the conclusions must be false when each of the two premises is true; a neither valid nor invalid syllogism is one in which the conclusion either can be true or can be false when …

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Can a syllogism violate all five rules?

If the syllogism passes the rule, put a check mark under the corresponding number and if it breaks the rule, put an X. If it breaks any rule, then the argument is invalid. It must pass all five rules to be valid.

Can a syllogism be wrong?

A false premise is an incorrect proposition that forms the basis of an argument or syllogism. Since the premise (proposition, or assumption) is not correct, the conclusion drawn may be in error.