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1.OPTICALILLUSIONS2. Which square is darker, A or B? 3.   4. The ‘brown’ square in the centre top, and the ‘orange’ squarein the centre front are exactly the same…

1.OPTICALILLUSIONS2. Which square is darker, A or B? 3.   4. The ‘brown’ square in the centre top, and the ‘orange’ squarein the centre front are exactly the same…