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Rear view of a man in formal clothes who is pondering about possible solutions of the complicated problem. Many arrows with different directions are drawn around his head on the black chalkboard.
close up of math formulas on a blackboard
Confused trainee working on line with a laptop in a difficult assignment at office
Back view of young businessman in concrete corner with mathematical formulas. Complex algorithm and math concept
Futuristic abstraction. Chaotic thin lines on bluish gray background. Complicated subtle raster graphic pattern

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