【Question 17】

How many figures of the following shape are there in a $6 \times 6$ grid?



Translate the above text into English, please keep the original text's line breaks and format, and output the translation result directly.
【Analysis and Solution】
Counting, Figure Counting.
In a $6 \times 6$ grid, there are $5 \times 5=25$ " $2 \times 2$ square grids";

In each " $2 \times 2$ square grid", there are 4 figures like ;

Therefore, in a $6 \times 6$ grid, there are $4 \times 25=100$ figures like .