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.
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If you have either an android phone or an iphone you could try to purchase it on our apps using either google wallet or apple pay (which accept debit cards). This works in some countries where debit cards are generally not allowed to make online international purchases, not sure if it will work in Indonesia.
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
\(
...\)
or\[
...\]
to ensure proper formatting.2 \times 3
2^{34}
a_{i-1}
\frac{2}{3}
\sqrt{2}
\sum_{i=1}^3
\sin \theta
\boxed{123}
Comments
i am from india, i am trying to buy subscription but my card is not working, what should i do
@Calvin Lin sir, you may help him out.
Hi Alvin,
If you have either an android phone or an iphone you could try to purchase it on our apps using either google wallet or apple pay (which accept debit cards). This works in some countries where debit cards are generally not allowed to make online international purchases, not sure if it will work in Indonesia.
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Hopefully you add more optional payment methods like Bitcoin or anything else.
Hi, if i pay on google wallet would I still be able to access the account on website?