9.11.3 Can you answer these questions?

9.11.3.1 Show current chapter number on each page margin using memoir

https://tex.stackexchange.com/landing/r/digest?cta=question&id=675308

I'm writing a thesis with the memoir class. I'd like to include a marker with the chapter thumbs in the margin of every page at a height that depends on the chapter number. It should look relatively ... 
[memoir] [chapterthumb]
 

asked by skdys https://tex.stackexchange.com/landing/r/digest?cta=user&id=188964 Score of 1

9.11.3.2 How to change each font?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=674946

I'm writing my thesis and I'd like to do these things: 
Using Garamond font for Serif, Cabin for Sans, Latin Modern for Math, and Inconsolata for monospaced. How to set each one? 
Garamond has to be ... 
[fonts] [fontsize] [math-fonts]
 

asked by Daniel Checa https://tex.stackexchange.com/landing/r/digest?cta=user&id=220172 Score of 1

9.11.3.3 The Location of the Date in Letter Class

https://tex.stackexchange.com/landing/r/digest?cta=question&id=675345

MWE: 
\documentclass[12pt]{letter} 
\usepackage[english]{babel} 
\usepackage{lipsum} 
\begin{document} 
\begin{letter} 
{Name \\ 
Address \\ 
Location } 
%\date{February 15, 2023} 
\opening{Dear ---,} ... 
[vertical-alignment] [letters] [date]
 

asked by jean-marie https://tex.stackexchange.com/landing/r/digest?cta=user&id=266798 Score of 1

answered by JamesT https://tex.stackexchange.com/landing/r/digest?cta=user&id=273733 Score of 0