# Categorical syllogisms | Reading homework help

Question:  Give an example of a valid categorical syllogism and identify the form (mood + figure) of the syllogism. Then, give an example of a categorical syllogism that is not valid and identify which rule or rules from 5.3 it breaks.

Format:

Example 1

All professors are doctors.

All mathematicians are professors.

Therefore, all mathematicians are doctors.

Mood/Form: AAA-1

example2

Some Star Trek fans are not fans of Star Wars.

No Dr. Who fans are Star Trek fans.

Therefore, all Dr. Who fans are fans of Star Wars.

Mood and Form: OEA – 1

This categorical syllogism is invalid because it violates rules three and four.  It uses two negative premises which do not conclusively provide enough evidence to support the conclusion.  It is also drawing an affirmative conclusion from a negative premise, which violates rule four.

## Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
\$26
The price is based on these factors:
Number of pages
Urgency
Basic features
• Free title page and bibliography
• Unlimited revisions
• Plagiarism-free guarantee
• Money-back guarantee
On-demand options
• Writer’s samples
• Part-by-part delivery
• Overnight delivery
• Copies of used sources
Paper format
• 275 words per page
• 12 pt Arial/Times New Roman
• Double line spacing
• Any citation style (APA, MLA, Chicago/Turabian, Harvard)

# Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

### Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

### Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

### Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.