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Q.

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.


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a

5n

b

6n

c

8n

d

9n 

answer is A.

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Detailed Solution

Concept- This issue just calls for rudimentary mathematical understanding; no intricate calculations are needed. In a parade, every cadet forms rows and columns and stands in a row as they march forward in accordance with the columns.
The rule to be applied in this problem is multiplication with regard to the number of cadets in a specific row, or how many cadets there are in each row.
seoThese dots symbolise the cadets in a parade because there are five cadets in each row and separate column in the presented problem.
Considering that there are 5 cadets in each row
There are 5 cadets in a row.
2 rows of cadets in total = Question Image3 rows of cadets in total= Question ImageTherefore, the total number of cadets in the parade in a specified number of rows is calculated as follows:
5 × number of rows.
Given that there are n rows,
Therefore,
There are 5n cadets total.
Hence, the correct answer is option 1.
 
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