Problem / game
First name
Jack Carey
School
Canberra Grammar School
Country
Age
10
7 is a stick.
8 is a rectangle.
9 is a square.
10 is a rectangle.
11 is a stick.
12 is a rectangle.
13 is a stick.
14 is a rectangle.
15 is a rectangle.
16 is a square.
17 is a stick.
18 is a rectangle.
19 is a stick.
20 is a rectangle.
Every fourth then second then fourth and so on are sticks.
Every multiple of two (excluding 2 and 4) and every multiple of three (excluding 3 and 9) are rectangles.
Every fifth then seventh then fifth and so on.