Problem / game
First name
Marcus, Ben & Hank
School
Elm Park Primary
Country
Age
10
The second row has 6 more sticks than the first. Also, the 3rd row has 9 more sticks than the second.
This means if X is the amount of rows, you multiply it by 3 you get the amount of sticks: X x 3=S
90 x 3=270 so now you know that the amount of sticks in 90 rows is 270.
On the first row there is 1 triangle and on the 2nd row there is 3 triangles which means you add 2 triangles every row.