A little thinking game..
I counted 40 
Re: A little thinking game..
I only got 36, but I did it kind of fast.
EDIT: Just saw 4 more, making my total 40 
Re: A little thinking game..
I'm stuck at 35

Re: A little thinking game..
not sure what the actual answer is.. I wonder if there's more than 40? :confusedshrug:

Re: A little thinking game..
34

Re: A little thinking game..
The answer is 40.

Re: A little thinking game..
40! Must look between the lines.

Re: A little thinking game..
An n x n grid will have a total of n2 + (n  1)2 + ... + 22 + 12 squares. The picture has one 4 x 4 square and two 2 x 2 squares. There are 42 + 32 + 22 + 12 = 16 + 9 + 4 + 1 = 30 squares in the 4 x 4, and there are 22 + 12 = 4 + 1 = 5 squares in each 2 x 2. Thus, there are a total of 30 + 2 * 5 = 40 squares.

Re: A little thinking game..

Re: A little thinking game..
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nice :applause: .. I missed the last 'big ones' 
Re: A little thinking game..
Oh, I missed the four 3x3 squares. No wonder I could only get 36.

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What are you talking about? :oldlol: 
Re: A little thinking game..
I counted 40 when I saw this on Facebook.

Re: A little thinking game..
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Some people mistakenly count these due to getting in the habit of counting open spaces rather than squares: 
Re: A little thinking game..
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Do you mean n^2 instead of n2? Not sure what formula you're using. But I'm assuming those are meant to be powers instead of multipliers, right? The formula for the larger squares that makes sense to me is f(x) = (x(x+1)(2x+1))/6 where x = 4. f(4) gives you (4 * 5 * 9)/6 = 30 total squares for the larger ones. Then I'd add the 10 total combinations of the smaller squares. I think we're basically doing the same thing to arrive at 40 though. 
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