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1. In the following two problems, the premises marked A, B, and C are followed b

ID: 3134955 • Letter: 1

Question

1. In the following two problems, the premises marked A, B, and C are followed by several
possible conclusions. Take each conclusion in turn, and check whether the resulting
argument is valid or invalid. Support your analysis with Euler diagrams.

A. All people who drive contribute to air pollution
B. All people who contribute to air pollution make life a little worse.
C. Some people who live in a suburb make life a little worse.
a. Some people who live in a suburb contribute to air pollution.
b. Some people who make life a little worse live in a suburb.

Explanation / Answer

In the following two problems, the premises marked A, B, and C are followed by several
possible conclusions. Take each conclusion in turn, and check whether the resulting
argument is valid or invalid. Support your analysis with Euler diagrams.

C. Some people who live in a suburb make life a little worse.

a. Some people who live in a suburb contribute to air pollution.