n(n+1)
Classroom seats in Row n, number of seats per row lines and more than 1, the classroom is the total number of seats
Classroom seats in Row n, number of seats per row lines and more than 1, the total number of classroom seats ().
n(n+1)
Classroom seats in Row n, number of seats per row lines and more than 1, the classroom is the total number of seats
Classroom seats in Row n, number of seats per row lines and more than 1, the total number of classroom seats ().