Prove that every type of problem appear in Brilliant!

Suppose not, then there will be $0$ problems of some type, say Chemistry.

But then, we would have solve $0$ problems of Chemistry, which means we solved $\frac{0}{0}$ of the Chemistry problems. But $\frac{0}{0}$ is undetermined, which means that $\frac{0}{0} = x$ , where $x \in \mathbb{R}$ .

Thus, we have a contradiction (since the fraction is constant) and thus we have every type of problem in Brilliant. :D

Markdown	Appears as
`italics` or `_italics_`	italics
`bold` or `__bold__`	bold
- bulleted - list	bulleted list
1. numbered 2. list	numbered list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1 paragraph 2	paragraph 1 paragraph 2
`[example link](https://brilliant.org)`	example link
`> This is a quote`	This is a quote
# I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world"	# I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world"

Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$

Prove that every type of problem appear in Brilliant!

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