I agree with Wolvenkinde - 50 squares 4x4 squares = 1 3x3 squares = 4 2x2 squares = 9 1x1 squares = 20 .5x.5 squares = 16
I've got 51... I am sure it isn't correct but that is counting the squares that are three blocks wide and tall that would be easy to overlook.
well - I suppose if you consider an border of the background behind the picture to be a square it could be 51....but I am sure there are 50 'in' the picture having the same counts per size as short69. However you can double the 50 if you count the interior of the line and exterior of the line as seperate sized segments and end up with 100(of course plus 1 for total of 101 if border of background is considered part of the count)
well - the answer is debatable as each person can see however many quares there as they happen to see. As for doubleing the count - if you take a square out of the picture and look at it with the lines around it, the line itself has width and thereby presents you with 2 different sized squares(an interior and an exterior dimension square). I could even say there might be a total 102, due to when I hover over the pic and it expands the border is a bold line that could be interpretted as defining two different sized squares. Another option is to say there are only 16 of the smallest 'squares' due to the fact that the other lines that might delineate the larger squares are broken by intersecting segments. Anyway since he didn't really set any parameters as to define what is acceptable to count as a square, it is open to interpretation and the answer would then be: Just as many as you happen to see when you look at it.
The question is 'how many do you see' and not 'how many are there', or 'how many can you find'. As for '4 equal sides' that is part of the definition of what a square is(along with 90deg corners)...so in my mind that was just a given to begin with when I saw the word 'square'. He also did say to assume that the corresponding segments are equal in length though it appears(and measures) rectangular in my view, but I accept that as a parameter. This is an exercise in perception - so what is your perception of the final answer, and let us see if you have it right.