30, 60, 90, 120
Positive 30.
The sum of the first 30 positive integers is: 465.
30
Yes
The sum of the first 30 positive even numbers is 930.
The positive factors of four are 1,2, and 4.
The first four positive integers of 13 are : 26, 39, 52, 65
Treat the "plus positive X" as "minus negative X". Example: Positive two plus positive two equals positive four. Positive two minus negative two equals positive four.
It's a whole number. It's positive, and it has two digits. It is not prime. Four months have exactly that many days. The most comprehensive site on the internet for the number 30 is http://www.primesdemystified.com/thirty
positive 10
The sum of the first 30 positive even numbers is 930.
48