# Combinatorics Practice Sample

You have just completed an introduction to Permutations. More problems are available in the Combinatorics practice map, which guides you through the basic principles of the topic. Full access to this map is available to Brilliant$\color{#20A900} {^2}$ members.

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This note is the conclusion of the set Get Started With Combinatorics.

Note by Arron Kau
6 years, 7 months ago

This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

When posting on Brilliant:

• Use the emojis to react to an explanation, whether you're congratulating a job well done , or just really confused .
• Ask specific questions about the challenge or the steps in somebody's explanation. Well-posed questions can add a lot to the discussion, but posting "I don't understand!" doesn't help anyone.
• Try to contribute something new to the discussion, whether it is an extension, generalization or other idea related to the challenge.

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold
- bulleted- list
• bulleted
• list
1. numbered2. list
1. numbered
2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1paragraph 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"
MathAppears 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} $\boxed{123}$

Sort by:

Math is beautiful

- 5 years, 10 months ago

- 5 years, 10 months ago

Love it ...

- 5 years, 10 months ago

.i never encounter this kind of topic since before. But i loved math so .. im interested to learn.

- 6 years, 5 months ago

Entry level....

- 6 years ago

The most importante subjetiva is...

- 5 years, 9 months ago

- 5 years, 7 months ago

Lovely

- 5 years, 7 months ago

Interestring

- 6 years, 7 months ago

Ya really intresting ...bt i m bad at permutations and combinations ...lets solve

- 6 years, 6 months ago

Check out the combinatorics practice section, which helps you build up your skills one at a time.

Staff - 6 years, 6 months ago

My math skills are so varied that I find this is quite refreshing. It allows me to relearn things and learn new thing.

- 5 years, 9 months ago

Great! I'm glad that you are enjoying this section and learning new stuff :)

Staff - 5 years, 9 months ago

intresting

- 6 years, 6 months ago