Q3 of 41 Page 226

Cadets are marching in a parade. There are 5 cadets in a row. What is the rule which gives the number of cadets, given the number of rows? (Use n for the number of rows)

Let us assume the number of rows will be n


Also,


It is given in the question that:


Number of cadets in one row = 5


Therefore,


Total number of cadets = Number of cadets in a row × Number of rows


= n × 5


= 5n


More from this chapter

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1

Find the rule which gives the number of matchsticks required to make the following matchstick patterns. Use a variable to write the rule:

(a) A pattern of letter T as


(b) A pattern of letter Z as


(c) A pattern of letter U as


(d) A pattern of letter V as


(e) A pattern of letter E as


(f) A pattern of letter S as


(g) A pattern of letter A as

2

We already know the rule for the pattern of letters L, C and F. Some of the letters from Q. 1. (given above) give us the same rule as that given by L. Which are these? Why does this happen?

 4

If there are 50 mangoes in a box, how will you write the total number of boxes? (Use b for the number of boxes)

 5

The teacher distributes 5 pencils per student. Can you tell how many pencils are needed, given the number of students? (Use s for the number of students)