Suppose we use matchsticks to form letter C

6.jpg

Here, we used 3 matchsticks

 

Suppose, we want to Make more than one C

7.jpg

 

8.jpg

So,

2 Cs require 6 matchsticks

3 Cs require 9 matchsticks

4 Cs require 12 matchsticks

And so on………

 

We can say that,

Number of matchsticks = 3 × Number of C

Writing n = number of Cs

Number of matchsticks = 3n

9.jpg

Let’s Check

For n = 1, Number of matchsticks = 3 × 1 = 3

For n = 2, Number of matchsticks = 3 × 2 = 6

For n = 3, Number of matchsticks = 3 × 3 = 9

 

So, Writing

  Number of matchsticks = 3n

makes our job easier.

 

Suppose we have to make 100 Cs

     Number of matchsticks = 3 × 100

            = 300

 

  1. Chapter 11 Class 6 Algebra
  2. Concept wise

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.