Over the shoulder image of man doing sudoku puzzle

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Size: 5184px × 3456px
Photo credit: © David McQ / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: active, brain, caucasian, effort, health, learn, learning, logic, man, mathematics, maths, person, play, puzzle, shoulder, sitting, stimulation, sudoku, therapy, thinking, view