[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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The force of the temptation which urges us to seek for such evidence and appearances as are in favour of our desires, and to disregard those which oppose them, is wonderfully great.
- Michael Faraday
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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?