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28 25 5 21 18 5 14 choose which pair of...

This question belongs to Competitive Reasoning Number Series Completion
Number Series Completion
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28, 25, 5, 21, 18, 5, 14, ... choose which pair of numbers comes next?

Answer & Solution
Correct Answer: Option A
This is an alternating subtraction series with the interpolation of a random number, 5, as every third number. In the subtraction series, 3 is subtracted, then 4, then 3, and so on.
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HAROON HAROON
HAROON HAROON 4 years ago
I can't learn that please explain it please
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