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 4 of 9.

Santoshi said:   8 years ago
Thank you all.

Cherishma said:   8 years ago
10, 15, 30, 75, 225 What is the number after 225?

Priyanka said:   8 years ago
thank you all for giving the explanation.

Shaurya said:   6 years ago
Thanks all for explaining.

Harika said:   5 years ago
Thanks for your explanation.

Priyesh Singh said:   4 years ago
I understand this, Thanks to all.

Alekhya said:   4 years ago
Thanks @Sundar.

Swetha venna said:   4 years ago
Thanks @Sundar.

GUPTA said:   4 years ago
Thanks for explaining the solution @Sundar.

Geeta shrestha said:   3 years ago
-10, +5.

80-10 = 70.
10+5 = 15 so on,
So, the answer is 20,50.


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