Answer:
 10 squares
Explanation:
You want to know the number of squares in the given figure.
Identification
We can label the vertical lines in the figure left-to-right as 1–4, and the horizontal lines as A–D.
There are 4 smallest squares with sides ...
 12AB, 34AB, 12CD, 34CD
There is 1 next-size square with sides ...
 23BC
There are 4 second-largest squares with sides ...
 13AC, 24AC, 13BD, 24BD
And there is one largest square with sides ...
 14AD
The figure has the 10 listed squares in it.
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