Question

Cadets are marching in a parade. There are 5 cadets in each row. What is the rule for the number of cadets, for a given number of rows? Use $'n'$ for the number of rows.

Answer 1

Hint: This problem deals with basic knowledge of mathematics and nothing complex or no big formulas are required. In a parade all the cadets stand in rows and columns, they march ahead with respect to columns and the cadets in each column stand in a row.
Here in this problem the rule to be applied here is multiplication with respect to how many cadets in a given row, i.e, how many cadets per row.

Complete step-by-step solution:

These dots represent the cadets in a parade, as in the problem given there are 5 cadets in each row, of separate columns.
Given that number of cadets in each row = $5$
The number of cadets in 1 row = $5$
The number of cadets in 2 rows = $5 \times 2 = 10$
The number of cadets in 3 rows = $5 \times 3 = 15$
So in total number of cadets in the parade in a given number of rows is given by:
Number of cadets = $5 \times $number of rows.
Given the number of rows =$n$
Therefore,
Number of cadets = $5n$

The rule for the number of cadets, for a given number of rows \['n'\] is given by $ = 5n$

Note: Here the cadets are standing in rows and columns where the cadets per row is given, when the cadets per column is given then the number of cadets in the whole parade is given by the multiplication of the number of cadets in a column and given number of columns.