Each of the boxes in the figure below is a square. How many different squares can be traced using the lines in the figure?

number of 1 by 1 squares = 21

number of 2 by 2 squares = 12

number of 3 by 3 squares = 5

number of 4 by 4 squares = 0

21 + 12 + 5 = 38

Excellent, hectictar !!!