Xiao Ming, Xiao Hong and Xiao Jun visited the Presidential Palace in Nanjing and took pictures at the entrance of the Presidential Palace. When taking pictures, how many ways can the three of them cho

Xiao Ming, Xiao Hong and Xiao Jun visited the Presidential Palace in Nanjing and took pictures at the entrance of the Presidential Palace. When taking pictures, how many ways can the three of them choose to take pictures?

(1) According to the number of people:

① 3 types of single person photos, ② 3 types of double photos, ③ 1 type of three person photos,

*** 3+3+1=7 types;

(2) According to different positions and number of people:

① Single photo or 3 types, ② Double photo 3×2×1=6 Types, ③ Three people take photos of 3×2×1=6 types,

***3+6+6=15 types.

Answer: The three of them have 7 or 15 ways to take photos.