Question

An irregular solid is cut into seven pieces as shown. The pieces are neither rotated nor scaled, but are kept in a random sequence. Find the correct sequence to get the smooth form. The sequence should be written from left to right.

Hint:

For sequence puzzles with shapes, look for unique features like flat ends, sharp corners, or the narrowest/widest points. These often serve as anchors (start/end points) for the sequence.

Answer 1

Correct Answer: 3214765

Step 1: Understanding the Concept: 
This is a visual puzzle that requires reassembling a sliced object. The goal is to arrange the pieces in an order that recreates the original smooth, continuous form by matching the curved surfaces of adjacent pieces. 
Step 2: Detailed Explanation: 
We need to find the correct order of the seven pieces from left to right. Let's analyze the shapes to find a starting and ending piece and then fit the others in between. 

Piece 3: This piece has a flat base and curves upwards. This makes it the most logical starting piece (the bottom of the object). 
Piece 2: The concave curve on the bottom of piece 2 perfectly matches the convex curve on the top of piece 3. So, the sequence starts with 3-2. 
Piece 1: The bottom of piece 1 matches the top of piece 2, continuing the smooth outward curve. The sequence is now 3-2-1. 
Piece 4: This is the narrowest piece, forming a 'neck'. Its bottom curve fits onto the top of piece 1. The sequence is 3-2-1-4. 
Piece 7: The object starts to widen again after the neck. The bottom of piece 7 fits on top of piece 4. The sequence is 3-2-1-4-7. 
Piece 6: Continuing the widening curve, the bottom of piece 6 matches the top of piece 7. The sequence becomes 3-2-1-4-7-6. 
Piece 5: This piece has a flat top, making it the logical end piece. Its bottom curve fits perfectly on top of piece 6. This completes the object. 

Step 3: Final Answer: 
By matching the adjacent surfaces, the correct sequence from left to right (bottom to top of the object) is 3-2-1-4-7-6-5. Therefore, the numerical sequence is 3214765.