Question

Shown below are three panels with cutouts in three shapes. From the given pairs of blocks, identify which pairs will PASS THROUGH all the cutouts.

• A. Only pair A
• B. Only pair C
• C. Only pairs A & C
• D. All pairs A, B and C

Hint:

For “which shape passes through” puzzles, imagine sequencing: insert the thinnest part first, use rotation inside the opening, then bring the broader portion through the larger part of the cutout.

Answer 1

The Correct Option is D

Each pair contains two slender profiles that can be oriented to thread through the openings one by one.
Slot panel (right): all blocks have a thin limb/bar that can align with the slot and pass fully before being rotated clear.
Keyhole panel (middle): enter the thin limb through the stem, then rotate the broader end through the circular head—possible for each block because the limb’s width is less than the stem and the broader end fits the circle when tilted.
Cloud panel (left): being the largest aperture, it easily admits each block when rotated to fit the curved cavity.
Therefore every pair (A, B, and C) can be maneuvered to pass through all three cutouts, so the correct choice is \(\boxed{\text{(D)}}\).