[V05] Exercises
Module: Venn diagrams
- V00. Introduction
- V01. Basic notation
- V02. Everything and nothing
- V03. Exercises
- V04. Three circles
- V05. Exercises
- V06. Existence 1
- V07. Existence 2
- V08. Syllogism
- V09. Exercises
- V10. Limitations of Venn diagrams
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I must be allowed to add some explanatory remarks to bring the subject home to reason—to that sluggish reason, which supinely takes opinions on trust, and obstinately supports them to spare itself the labour of thinking.
- Mary Wollstonecraft
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- Analogical arguments
a. Is the statement "Every B is a C" true according to this diagram?
b. Is the statement "No A is a B" true according to this diagram?
c. Is the diagram consistent with the statement "Something is A"?
d. "Something is A and it is either B or C." Is this statement true according to this diagram?
e. Is the diagram consistent with the statement "Something is A or B"?
f. This diagram is about different types of mathematical functions. But there is something wrong with it. What is it?