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Pen and a mathematical exercise (calculations are real and solved correctly)

Stock Photo:
Image ID: 35952859
Copyright:
Small
444x500 6.2"x6.9" (72dpi) 189 KB
Med
888x1000 3.0"x3.3" (300dpi) 576 KB
Large
1944x2189 6.5"x7.3" (300dpi) 1.3 MB
Super
3888x4378 13.0"x14.6" (300dpi) approx.2.8 MB
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