A letter in math can stand for any number
p= n=4
It is an expression
n will typically mean number. It can stand for any given number, and what it stands for will depend on the problem.
"Respective" means "in that order". So, for example, weights of 1 Newton, 2 N and 3 N at points p q and r respectively, menas a weight of 1 N at point p, 2 N at q and 3 N at r.
A letter in math can stand for any number
The letters P N in this case stand for "prime numbers".
It means K C F or Keep Change Flip with fractions when multiplying E H I E A L P N P G E
p= n=4
It is an expression
n will typically mean number. It can stand for any given number, and what it stands for will depend on the problem.
Five pennies in a nickel. (US coinage)
Seven players in a netball team.
United Nations Development Programme
National Association for the Advancement of Colored People N A A C P
It is one junction i.e. P-N junction diode.
11 is the Number of Players on a Football Team