Combinations
Combine symbol sets while preserving order and removing duplicates.
Six practical tasks covering Combinations, Rotations, Element changes. Choose a solution and get an explanation for every answer.
Choose a solution rather than rate yourself. Check the supplied data and compare three alternatives in every case.
Combine symbol sets while preserving order and removing duplicates.
Rotate arrows through a quarter or half turn.
Track element counts when groups are combined or removed.
Two tasks per topic help you choose where to start revising.
Combine symbol sets while preserving order and removing duplicates.
Rotate arrows through a quarter or half turn.
Track element counts when groups are combined or removed.
Each correct answer earns one point: six overall and two per topic. The percentage is accuracy on this set. Five minutes is an estimate; there is no timer or speed bonus.
This short BrainApps test checks how you apply knowledge to concrete tasks. It covers three topics: Combinations, Rotations, Element changes, with two questions each. One example is: “Which symbol replaces “?” in the last row?”. Choose one of three answers; you can revisit questions and change choices before finishing. The result shows your correct-answer total, topic scores and a full review: your choice, the correct answer and its explanation. Use it for independent preparation or a team discussion. Start with a topic where you made an error, explain the rule in your own words and then repeat the check.
Three sections: Combinations, Rotations, Element changes. Two questions each make six tasks overall.
For example: “Which symbol replaces “?” in the last row?”. Choose one of three alternatives using the supplied information.
One point per correct answer, up to six. Each topic shows correct choices out of two. Explanations help identify the reason for an error.
Yes, switch questions and change choices before finishing. The result stores your final answer.
No. The test and result are available without an account; keep the result link. You can register for further training.
Explain why the correct choice fits, then compare it with your own. In a team, discuss which data determined the decision.
Six tasks, a clear result and explanations. Start now.