PMDC Verified Question 14 of 15
Look at the visual pattern sequence: A triangle marker shifts position among squares in successive steps. Which option completes the pattern?

GRID POSITION SHIFT: Step 1 (Pos 1): Step 2 (Pos 3): Step 3 (Pos 5): Step 4: Predict Next Position OPTIONS: A: Grid Pos 4 B: Grid Pos 6 C: Grid Pos 8 D: Grid Pos 7
A
Grid Pos 4
B
Grid Pos 6
C
Grid Pos 8
D
Grid Pos 7
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Grid Pos 7
Concept:

Positional Movement Rules along a discrete coordinate grid.

Formula / Rule:

$$\text{Position}_n = \text{Position}_1 + (n - 1) \times 2$$

Solution:

  • Step 1: Marker is located at Grid Position 1.
  • Step 2: Marker shifts \(+2\) spaces to Grid Position 3.
  • Step 3: Marker shifts \(+2\) spaces to Grid Position 5.
  • Step 4: Following the continuous \(+2\) step rule, the marker must shift to \(5 + 2 =\) Grid Position 7 (Option D).


Why other options are incorrect:

  • Option A (Pos 4) & Option B (Pos 6): Represent even coordinate positions, violating the odd-numbered stepping arithmetic.
  • Option C (Pos 8): Jumps \(+3\) spaces from Step 3, breaking the constant distance rule.

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