1.7 แผนภาพเวนน์-ออยเลอร์ 

$$\left\{1,\ 4\right\}$$

$$\left\{3,\ 6\right\}$$

$$\left\{1,2,3,6\right\}$$

$$\left\{1,2,3,4,5,6,7,8\right\}$$

$$\left\{1,\ 4\right\}$$

$$\left\{3,\ 6\right\}$$

$$\left\{1,2,3,6\right\}$$

$$\left\{1,2,3,4,5,6,7,8\right\}$$

$$\left\{1,\ 4\right\}$$

$$\left\{3,\ 6\right\}$$

$$\left\{1,2,3,6\right\}$$

$$\left\{1,2,3,4,5,6,7,8\right\}$$

$$\left\{1,\ 4\right\}$$

$$\left\{3,\ 6\right\}$$

$$\left\{1,2,3,6\right\}$$

$$\left\{1,2,3,4,5,6,7,8\right\}$$

$$\left\{1,\ 4\right\}$$

$$\left\{3,\ 6\right\}$$

$$\left\{1,2,3,6\right\}$$

$$\left\{1,2,3,4,5,6,7,8,9,10\right\}$$

$$\left\{1,\ 3,5,9\right\}$$

$$\left\{2,\ 3,5,10\right\}$$

$$\left\{2,4,8\right\}$$

$$\left\{1,2,3,4,5,6,7,8,9,10\right\}$$

$$\left\{1,\ 3,5,9\right\}$$

$$\left\{2,\ 3,5,10\right\}$$

$$\left\{2,4,8\right\}$$

$$\left\{1,2,3,4,5,6,7,8,9,10\right\}$$

$$\left\{1,\ 3,5,9\right\}$$

$$\left\{2,\ 3,5,10\right\}$$

$$\left\{2,4,8\right\}$$

$$\left\{1,2,3,4,5,6,7,8,9,10\right\}$$