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# Introduction

Kevin, Joseph, and Nicholas are 3 brothers. If the following statements are all true, which of them is the youngest?

- Kevin is the oldest.
- Nicholas is not the oldest.
- Joseph is not the youngest.

Merlin realizes that all Alakazams are Open Sesames, and some Hocus Pocuses are Alakazams.

Is it true that some Hocus Pocuses are Open Sesames?

Note: There is at least one of each item.

Our exploration of logic starts with a love of puzzles, and then builds up to explore: strategy games, truth tellers/liars riddles, common logical fallacies, and more!

Working through these problems will strengthen your skill at organizing and formalizing logical reasoning.

**at least one of them is a lie**, what is the color of the shirt that Inara is wearing?

5 brothers compare their heights and find that

- Alex is taller than Brian but shorter than Charlie;
- Daniel is taller than Edward but shorter than Alex.

**Who is the tallest?**

- There is exactly 1 false statement in this list.
- There are exactly 2 false statements in this list.
- There are exactly 3 false statements in this list.

Exactly how many false statements are there in the list above?

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