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.
Stay on topic — we're all here to learn more about math and science, not to hear about your favorite get-rich-quick scheme or current world events.
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
# 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
2×3
2^{34}
234
a_{i-1}
ai−1
\frac{2}{3}
32
\sqrt{2}
2
\sum_{i=1}^3
∑i=13
\sin \theta
sinθ
\boxed{123}
123
Comments
Hi Nazmus,
You should solve problems that are rated higher than your personal rating in a topic. The higher relative to you a problem is rated, the more your rating will increase if you get it right, and the less your rating will decrease if you get it wrong. When your rating drops below certain values or passes certain values you level up or down. Read about it here at the Levels page.
Note that as of now, if you level up or down midweek, then you will have to wait until the following week to receive problems of your new level.
No, of course not, that would be a really silly system. Your rating would still increase, though not by much. For example, if you are rated 2000 and you solve a 1000 problem, your net rating will be positive, but likely too small to register. This makes sense, because we don't gain much information from you solving a really easy question.
If you solve the problem 'instantaneously' (a short period of time), your rating would increase.
Having said that, there are extreme edge cases where your (net) rating might actually decrease despite solving a problem, especially if you only got it right on the third try. This could occur when there are gargantuan changes in the ratings (either your own, or the problem) over a period of time.
Note: It would be extremely difficult to work your way up to 3000 by solving tons of ridiculously easy problems. It would be more rewarding to work with problems whose difficulty suits you.
Easy Math Editor
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:
*italics*or_italics_**bold**or__bold__paragraph 1
paragraph 2
[example link](https://brilliant.org)> This is a quote# I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world"\(...\)or\[...\]to ensure proper formatting.2 \times 32^{34}a_{i-1}\frac{2}{3}\sqrt{2}\sum_{i=1}^3\sin \theta\boxed{123}Comments
Hi Nazmus,
You should solve problems that are rated higher than your personal rating in a topic. The higher relative to you a problem is rated, the more your rating will increase if you get it right, and the less your rating will decrease if you get it wrong. When your rating drops below certain values or passes certain values you level up or down. Read about it here at the Levels page.
Note that as of now, if you level up or down midweek, then you will have to wait until the following week to receive problems of your new level.
Log in to reply
What if we solve problems with rating lesser than our rating, but answer them correctly? Will our rating decrease and will we be demoted?
Log in to reply
No, of course not, that would be a really silly system. Your rating would still increase, though not by much. For example, if you are rated 2000 and you solve a 1000 problem, your net rating will be positive, but likely too small to register. This makes sense, because we don't gain much information from you solving a really easy question.
If you solve the problem 'instantaneously' (a short period of time), your rating would increase. Having said that, there are extreme edge cases where your (net) rating might actually decrease despite solving a problem, especially if you only got it right on the third try. This could occur when there are gargantuan changes in the ratings (either your own, or the problem) over a period of time.
Note: It would be extremely difficult to work your way up to 3000 by solving tons of ridiculously easy problems. It would be more rewarding to work with problems whose difficulty suits you.
Log in to reply
That completely makes sense. To be true, I really like this rating system. It gives people what they are capable of.