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# New Checkpoint Added to Probability and Combinatorics Practice

We've added the following chapters to the Probability and Combinatorics Practice Map:

• Counting with Restriction
• Bijection / Injection / Surjection
• Counting 2
• Combinatorial Review 2

We will continue to extend the practice maps and add new maps on a regular basis. Thank you to all of our new Brilliant Squared members!

Note by Arron Kau
3 years, 8 months ago

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} $$\boxed{123}$$

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please add some new checkpoints in advanced algebra and calculus as well!!! Brilliant Squared is too gud!!

- 3 years, 8 months ago

Cool. Noticed you put a link to Brilliant Squared members which reminded me of something. Could there be a page full of the names of people who subscribed to Brilliant Squared? I dunno, it'd be just kinda like a "Hall of Fame" sort of thing as an added benefit for subscription. :D

- 3 years, 8 months ago

It was only a short time ago when you were supposedly strongly against $$B^2$$

- 3 years, 7 months ago

Eh, I wasn't really against it. I just thought that Brilliant was capable of getting funding from other sources. I'm sure there are tons places. It's for an AWESOME cause as anybody could tell. :P

- 3 years, 7 months ago