Question

We need matchsticks to create the fourth pattern.

• A. 13
• B. 21
• C. 16

Answer 1

The correct option is B 21

Let's count the number of matchsticks to identify the relation between the stages.

In the first stage, 6 matchsticks are used.

In the second stage, 11 matchsticks are used.


In the third stage, 16 matchsticks are used.

To identify the number of matchsticks in the fourth stage, let's find the difference between the numbers of matchsticks.

11 - 6 = 5
16 - 11 = 5

So, the number of matchsticks required in the fourth stage will be:
16 + 5 = 21


Hence, we need 21 matchsticks to create the fourth pattern.