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Dual Speed

Two properties change simultaneously at different rates. One moves every frame, the other every two frames.

Understanding this pattern

Dual-speed is one of the hardest pattern families. Two independent transformations operate at different frequencies: one changes every step, the other every two or three steps. You must track both independently. Frame 3 and frame 5 may look similar, but only one rule has reset while the other has advanced.

Example Question 1

Dual Speed q07_sliding_ticks
Options A B C D E
Correct answer: B

Pattern Rule

The upward and downward ticks move independently to the right along five cyclic positions. Calculate each tick’s step size separately, then wrap from the right endpoint back to the left.

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 2

Dual Speed q07_sliding_ticks
Options A B C D E
Correct answer: B

Pattern Rule

The upward and downward ticks move independently to the right along five cyclic positions. Calculate each tick’s step size separately, then wrap from the right endpoint back to the left.

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 3

Dual Speed q07_sliding_ticks
Options A B C D E
Correct answer: D

Pattern Rule

The upward and downward ticks move independently to the right along five cyclic positions. Calculate each tick’s step size separately, then wrap from the right endpoint back to the left.

Explanation

Option D 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

  • Some property changes every frame while another changes every other frame
  • Two independent elements behave on different rhythms
  • The sequence seems to have a period, but alternating frames break it

Common traps

  • Tracking only the faster-changing element and ignoring the slower one
  • Assuming both elements follow the same cycle length
  • Getting confused when one cycle resets mid-sequence

Related tags

dual_speed stacked

Question patterns using this concept (3)

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

Dual Rotations Sliding Ticks Two Subcircles
Practice Now Abstract Reasoning Patterns

Other pattern concepts

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