Are they available in Smath studio?
E.g.P(3,4)=4*3=12, C(3,4)=4*3/2=6
If yes, what are the name of the Functions?

I believe you'll need to call your own function:

Permutations and Combinations.sm (8 KiB) downloaded 46 time(s).

You can hide them in a collapsible area if you don't want them displayed in the work space.

I hope this helps.

Norm