Joke Collection Website - Mood Talk - Please carefully observe five cases in middle school, analyze their characteristics, find out their laws, and then find one that conforms to the laws in the following 1, 2, 3.

Please carefully observe five cases in middle school, analyze their characteristics, find out their laws, and then find one that conforms to the laws in the following 1, 2, 3.

Fill in 2.

The patterns in the upper and lower rows, 1, a four-grid and 4m overlap to form a Mi Zige (the kind I practiced calligraphy when I was a child), and 3, two top triangles and six mountains overlap to form a Mi Zige, with a horizontal bar missing in the middle. The combination of Zuo Waishan and Tian Zige should be a Tian Zige, which can just make up for the missing cross in Mi Zige.

law

1, 2, 4, 7, 1 1, 16, (22), (29),-The difference is: 1, 2, 3, 4, 5, 6, …

2,5, 10,17,26, (37), (50)-the difference is: 3,5,7,9, …

0, 3, 8, 15, 24, (35), (48)-the difference is: 3, 5, 7, 9, …

Find a pattern to fill in the blanks: 9- 1 = 8, 16-4 = 12, 25-9 = 16, 36- 16 = 20, 49-25 = 24.