Stock photo: Human brain and colorful question mark
Stock photo: Human brain and colorful question mark draw on blackboard

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#1134183 Human brain and colorful question mark by Ansonstock Stock photo Ansonstock

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abstract answer ask background black blackboard board brain business chalk chalkboard choice concept conceptual confusion creative decision design education graphic green head help human idea illustration inside intelligence male man mark memory mind mystery people person problem puzzle question red sign solution solve strategy symbol think thinking vision white