How to use the LET function in Excel

Reuse sub-formula(s) without typing repeatedly by using LET function in Excel.
How to find the last Sunday of the previous month by using Excel function?
How to find the first Sunday of a month by using Excel function?
What formula would obtain the first Sunday of a month?
How to use the LET function in Excel?

Welcome to join and feel free to raise/ask questions (if any) or share Excel tricks 🤗

#excel #functions