Теория 4p — Википедия
https://ru.wikipedia.org/wiki/%D0%A2%D0%B5%D0%BE%D1%80%D0%B8%D1%8F_4P
Теория (концепция) 4P — маркетинговая теория, основанная на четырёх основных «координатах» маркетингового планирования:
Marketing mix - Wikipedia
https://en.wikipedia.org/wiki/Marketing_mix
The term 'marketing mix' is a foundation model for businesses, historically centered around product, price, place, and promotion (also known as the "4 Ps"). The marketing mix has been defined as the "set of marketing tools that the firm uses to pursue its marketing objectives in the target market".
What is the value of 4P4? | Socratic
https://socratic.org/questions/58ee6fb77c01496ede32bc43
#""_4P_4# means the number of ways (permutations) of arranging #4# items from a collection of #4# items. There are #4# choices for the first item