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Accumulation

Elements are progressively added without removing previous ones. Count increases monotonically.

Understanding this pattern

In accumulation patterns, each frame adds one or more new elements while keeping all existing ones. A grid might fill one cell per step, or pie slices expand by a fixed angle each frame. The prediction requires knowing where the next element appears — which often follows a secondary path or counting rule.

Example Question 1

Accumulation q13_pie_accumulation
Options A B C D E
Correct answer: E

Pattern Rule

The filled sector grows clockwise by the same angular amount in every panel. Measure one step, keep the existing filled area, and add that angle once more.

Explanation

Option E is the only choice that applies this rule to the next panel. Every other choice stops, reverses, skips, or misaligns at least one part of the pattern.

Example Question 2

Accumulation q13_pie_accumulation
Options A B C D E
Correct answer: A

Pattern Rule

The filled sector grows clockwise by the same angular amount in every panel. Measure one step, keep the existing filled area, and add that angle once more.

Explanation

Option A is the only choice that applies this rule to the next panel. Every other choice stops, reverses, skips, or misaligns at least one part of the pattern.

Example Question 3

Accumulation q13_pie_accumulation
Options A B C D E
Correct answer: B

Pattern Rule

The filled sector grows clockwise by the same angular amount in every panel. Measure one step, keep the existing filled area, and add that angle once more.

Explanation

Option B is the only choice that applies this rule to the next panel. Every other choice stops, reverses, skips, or misaligns at least one part of the pattern.

Example Question 4

Accumulation q13_pie_accumulation
Options A B C D E
Correct answer: B

Pattern Rule

The filled sector grows clockwise by the same angular amount in every panel. Measure one step, keep the existing filled area, and add that angle once more.

Explanation

Option B is the only choice that applies this rule to the next panel. Every other choice stops, reverses, skips, or misaligns at least one part of the pattern.

How to spot it

  • The number of elements grows from frame to frame
  • Nothing disappears between frames — only additions
  • A region fills progressively (grid cells, pie slices, dots)

Common traps

  • Assuming linear growth when the pattern adds 1, then 2, then 3
  • Missing the path rule that determines WHERE new elements appear
  • Confusing accumulation with replacement (elements change, not add)

Related tags

accumulation count_progression continuous

Question patterns using this concept (7)

Choose a question pattern below to open the exam configurator and practise only that specific pattern.

Path Accumulation Polygon Morphing Pie Accumulation Hatched Rectangle Growth Polygon Dot Growth Wedge Dot Mix 6X6 Sparse Accumulation
Practice Now Abstract Reasoning Patterns

Other pattern concepts

Rotation Dual Speed Permutation & Swap Shape Cycling Path & Movement Interaction & Fusion Quadrants & Sectors Alternation & Fill Symmetry & Reflection