Figure Selection
1. The problem asks to identify the missing figure in a sequence of shapes arranged in two rows with numbers 1, 2, 3 on top and 4, 5, 6 on bottom, where the last shown shape in the top row is number 3 followed by a question mark.
2. We need to analyze the pattern or rule that determines the progression from left to right in the top row, which involves hourglass-like shapes with shaded or filled segments in specific positions.
3. Without a clear numeric or algebraic pattern, the solution relies on visual logical reasoning: observing changes in shading and line crossing from shape 1 to 3 to predict which shape 4 to 6 matches this progression.
4. The hint 'center' suggests focusing on the central part of the hourglass or the arrangement of lines or shaded segments relative to the center.
5. By comparing the given figures, the missing shape corresponds to a figure similar in pattern progression to shape 3, focused on the center.
6. Among the choices 4, 5, and 6, the correct matching figure based on the central shading and crossing lines logic is figure 5.
Final answer: Figure 5