General ⇒ How to print out '[' and '#' contained in documents

[microbit]

I am sorry to ask such a stupid question. I am just beginning to learn LaTex. I try to print the '['and '#'out in my document, but I can not work it out. The text is like this: "[Q & P], #1, #2, #3." Wish to get help from some masters. THX！！

[nlct]

The open square bracket [ shouldn't cause a problem, unless it follows a command that can have an optional argument. The ampersand & and hash # are special characters and need to be escaped:

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[Q \& P], \#1, \#2, \#3.

Regards
Nicola Talbot