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Comments (3)
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Topic:matrices: piano keys
3/5 (3)
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Tristan
4
9
1
Oct 2022
Tristansays...
Every row has one image with each containing 1, 2, and 3 black keys. Every row also has a total of 6 long white keys and 3 short keys.
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Comments (3)
Every row has one image with each containing 1, 2, and 3 black keys. Every row also has a total of 6 long white keys and 3 short keys.
Good .
Option D.
3 groups of 2-4 piano keys.
Each group has 0-2 half keys in each element.
Missing element is from 2 half-key group.