Question

A gift shop has ordered a new batch of boxes to pack their gifts in. But out of the four samples they have recieved, only one matches the design of the unfolded box. Find the box that matches the design.

• A. C
• B. B
• C. D
• D. A

Answer 1

The correct option is B B

The boxes only show the front, right, and top faces of the design.

So, we mark the points where the red lines meet the edges and the corners of these faces.


When folded, the two green points in the corner would overlap.


Hence, the final image of the box formed would have:

$2\times yellowpoints$
$2\times bluepoints$
$3–1=2\times greenpoints$

Marking the points as per the given rules on the boxes, we find:


The only box with 2 points of each color is box B.

Hence, box B is the only one that matches the design of the unfolded box.