Mathematics
Grade-4-
Easy
Question
Sophia made a pattern using triangles.
If this pattern continues, the number of 
triangles present in the next shape are____.
- 10
- 11
- 12
- 13
Hint:
We are given a pattern of shapes made using triangles by Sophia. The number of triangles is increasing with the pattern. We are given shapes 3 shapes. We are asked to find 4th shape. We have to find the rule used to make the shapes. Using the rule, we will find the next number.
The correct answer is: 11
The number of triangles in first shape is 1, second shape is 3, third shape is 9.
First shape has 1 triangle.
Second shape has 3 triangle. It has two triangles more that first triangle.
Third shape has 6 triangle. It has three more triangles than second.
We are asked to find number of triangles in next shape.
Fourth shape will have four more triangles.
The number of triangles = 6 + 4
= 10
The number of triangles are 10
The main part of the question is to find the rule used to write the pattern.
