Activity for wizzwizz4
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #283399 | Initial revision | — | over 3 years ago |
| Answer | — |
A: Intuitively, if you pick k out of n objects singly without replacement, why's the number of possible outcomes NOT $n(n-1) \dots [(n-(k - 1)]\color{red}{(n - k)}$? Each term of that product gives the size of the pool when you pick an object out – it's the number of possible items you can pick out at that moment, if you're picking them one at a time. Once you've taken $k$ items out of a pool of $n$ items, there are $n - k$ objects left over. This means that, ... (more) |
— | over 3 years ago |
| Edit | Post #283398 | Initial revision | — | over 3 years ago |
| Question | — |
Finding the smallest Mersenne-number multiple of an odd integer Problem Given an odd integer $a$, there exists some smallest $b$ such that $a\times b = 2^n-1$ (for some $n$). Find $b$ and $n$. What is an upper bound for this problem? What is a lower bound for this problem? In what cases is it easier? Naïve algorithm I know I can count up all ... (more) |
— | over 3 years ago |
| Comment | Post #283300 |
A tip: meta is for people to _decide on_ policies, more so than just to document them. While it's useful to describe what you've observed the policy to be in practice, a meta answer should be phrased as a definitive answer – and then people can downvote it if they disagree (so it looks like a definit... (more) |
— | over 3 years ago |
| Comment | Post #278772 |
If (if) we're modifying the Markdown parser, I wonder whether replacing MathJax with [KaTeX](https://katex.org/) would be a good idea, too. (more) |
— | about 4 years ago |
| Comment | Post #278772 |
Shouldn't the Markdown parser treat `$` and `$$` specially, then? (more) |
— | about 4 years ago |
| Edit | Post #278763 | Initial revision | — | about 4 years ago |
| Question | — |
Mathjax does not render new lines I can't make a new-line in MathJax. Markup: $$1 + 2 \\ 3$$ Result: $$1 + 2 \\ 3$$ It's supposed to look something like this (but centred): $1 + 2$ $3$ (more) |
— | about 4 years ago |
| Edit | Post #278141 | Post edited | — | over 4 years ago |
| Suggested Edit | Post #278141 |
Suggested edit: An $s$-sided dice has faces 1–$s$. (more) |
helpful | over 4 years ago |