Logical Reasoning - Number Series - Discussion

Discussion Forum : Number Series - Type 1 (Q.No. 16)
Directions to Solve
In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much

16.
Look at this series: 80, 10, 70, 15, 60, ... What number should come next?
20
25
30
50
Answer: Option
Explanation:
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.
Discussion:
83 comments Page 9 of 9.

Novartis said:   2 decades ago
More clarification needed, please help.
(1)

Shikha said:   2 decades ago
I didn't got this answer, I want a clarification.
(1)

Sumaya said:   2 decades ago
Please explain in detail.
(1)


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