Square the squares
Probability
Level
2
How many number of squares are present in the following figure.
26
18
20
28
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1 solution
Initially lets consider the left upper corner biggest square, it has (4+1+4+1) squares, multiply it into two for the same is in right lower square i.e - 20. We need to subtract -1 as one sq ((°_^) square )is being recounted. I.e. 19 There is a new grid created in the middle now but only, +2 new sq are created i.e 21, +2 squares in the upper right and lower left corner. I.e 23 Now its time to count the big sq's, created.. @ up right corner and lower left +2 And the outermost +1 I.e "26"