Sivukuva ajattelevasta blondista liikemiehestä puvussa ja ajattelemassa. Hän katselee taulua, jossa on kaavoja. - Kuvapankin valokuva ja kuva

Young man writing and drawing mathimatic formulas and drafts on a black blackboard. Concrete background. Back view. Concept of studying.

Young man wearing a suit standing with hans in pockets in front of the blackboard with formulas and drafts, three lamps above. Back view. Concrete background. Concept of thinking.

Women hand pointing sign in front of mathematical formulas drawn on blackboard

Business person standing against the blackboard with a lot of data written on it

Rear view of man in suit staring at whiteboard with formulas in confusion. Classroom with concrete wall and wooden floor. Concept of exact sciences and studying.

Businessman drawing mathematics equations and formulas

Full length of the rear view of the brunette girl who is writing down math formulas on the black chalkboard. A concept of university education.

Young businessman sitting on the bench hands on the back of his head in front of the blackboard with formulas and drafts, three lamps above. Back view. Concrete background. Concept of thinking.

Hand painting on a blackboardl with a roller covering it with mathematic signs, graphs, notes. Concept of giving new ideas

Rear view of young professional who is writing down math formulas on the whiteboard. A concept of analytical calculations. Wooden floor, concrete wall and three black ceiling lights are in the room.

Young girl with hands crossed standing at blackboard, many formulas and geometry sketches on it. Concept of education.

Rear view of a thoughtful woman who is writing math calculations on green chalk board.

A businessman with hands on hips standing on the black floor, graphs and formulas around him. Top view. Concept of solving a problem.