Number of people in line 18, Xiaoming platoon 14 from the left and Xiaodong platoon 10 from the right. How many people are there among them? How to form

Let's look at this arrangement diagram first. Each star represents a person:

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The black star on the right is Xiaoming, and the black star on the left is Xiaodong.

According to the figure, after analysis, the following answers can be made:

Solution: Xiaoming has 18- 14=4 people on his right.

There are 18- 10=8 people on the left of Xiaodong.

Then the number of people left in the middle, including Xiao Ming and Xiao Dong (both at both ends), is 18-4-8=6.

Minus Xiaoming and Xiaodong, the remaining number is the number of people separated between them, that is, 6-2=4 people.

Ps: the action analysis above the word solution can be omitted. This is just to make the problem more intuitive.