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80, 10, 70, 15, 60, ... What number should come next?

A. 20

B. 25

C. 30

D. 50

Answer: Option A

Solution(By Examveda Team)

This is an alternating addition and subtraction series. In the first pattern, 10 is subtracted from each number to arrive at the next. In the second, 5 is added to each number to arrive at the next.

This Question Belongs to Competitive Reasoning >> Number Series Completion

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