Puzzle – How many square are there?

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Puzzle – How many square are there?

 

Can you count number of squares in below pic?

 

 count-sqaures-puzzle-with-answer

 

 

Try to count squares and then match your answer with the one given below in this post. 

 

 

Scroll down to found out if your answer is correct.

 

 

 

 

 

Answer: 30

How to solve this type of puzzles without actually counting square?

You can use following formula to find out number of squares in a given puzzle.

If a puzzle has an n*n matrix of square (like above pic has 4×4). Then following formula will give correct answer.

n*(n+1)*(2n+1) / 6

So in our case we have n=4

4*(4+1)*(8+1) /6 = 30

if n was =3 then answer would have been 3*(3+1)*(6+1)/6=14

if n = 2 => 2*(2+1)*(4+1)/6=5

 

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