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:
84 comments Page 8 of 9.

Ravindra said:   9 years ago
The 1st pattern like 80-70-60 here added 10.

Now, the 2nd pattern 10-15-20 here added 5.

Sushree sonali said:   2 decades ago
Thanks sundar. Your explanation really helps me to know the answer.

Uday said:   9 years ago
Thanks to all for providing this explanation.

Kripal Sharma said:   9 years ago
Thanks to all for this explanation.

Abhiram said:   9 years ago
Thank you all for explaining this.

Neha said:   9 years ago
80,_70_60_50_(decrease series.) in 10 table.

10 15 20 25( increase series) in 5 table.

RAVI KUMAR said:   1 decade ago
Thanks sundar

Disha said:   10 years ago
Thanks for explaining the solution.

Ria sen said:   10 years ago
Need more explanation.

Chirag modi said:   1 decade ago
Now, I understand this, Thank you all.


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