First slide

Introduction to mathematical reasoning

Question

Which of the following is not a proposition?

Easy

A

$\sqrt{3}$ is a prime
B

$\sqrt{2}$ it irrational
C

Mathematics is interesting
D

5 is an even integer

Solution

"Mathematics is interesting" is not a logical sentence. It may be interesting for some persons and may not be interesting for others.
Therefore, this is not a proposition.

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