desktop computer with maze. round icon with long shadow on red or blue background - 智力題 幅插畫檔、美工圖案、卡通及圖標
thinking young woman with a glowing bulb above her head. problem solving and finding a new idea - 智力題 幅插畫檔、美工圖案、卡通及圖標謎語, 發明
19th-century rebus — a puzzle to solve. inside an egyptian-style cartouche appear three signs:a bird perched on a support; a bee; an egyptian-profile silhouette blowing..what message do these three figures form when put together? - 智力題 幅插畫檔、美工圖案、卡通及圖標
smartphone with maze. icon for design. blank, white and black backgrounds - line icon - 智力題 幅插畫檔、美工圖案、卡通及圖標
line drawing depicting a personalized architectural pictogram combining a barrel and a weapon component inside a carved frame - 智力題 幅插畫檔、美工圖案、卡通及圖標
pythagoras theorem diagram with copy space over vector blackboard slate like dark gray black background, there are 3 colorful solid semi circles on three sides of right angled triangle - 智力題 幅插畫檔、美工圖案、卡通及圖標
pythagoras theorem diagram with copy space over vector blackboard slate like dark gray black background, there are 3 colorful solid equilateral triangles on three sides of right angled triangle - 智力題 幅插畫檔、美工圖案、卡通及圖標
hidden, elusive. an isometric view of a question mark wrapped in layer upon layer of boxes - 智力題 幅插畫檔、美工圖案、卡通及圖標
desktop computer with maze. icon with long shadow on textured yellow background - 智力題 幅插畫檔、美工圖案、卡通及圖標