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?
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.
Bhavya said:
8 years ago
80-10=70,
70-10=60 with respect to the first series.
10+5=15,
15+5=20 my answer is 20.
70-10=60 with respect to the first series.
10+5=15,
15+5=20 my answer is 20.
Karmveer singh said:
7 years ago
The series likes this as 80 10 70 15 60 20 50 25 40 30 30 35 20 40 10 45 0 50.
Gaurav said:
10 years ago
Leave the series of 80, 70, 60.
Concentrate on 10, 15 so next will be 20.
Concentrate on 10, 15 so next will be 20.
Priya said:
1 decade ago
Its 80-10 = 70 in first series and 10+5 = 15 in second series and so on.
Nandini said:
9 years ago
Thanks for explaining the logic to find the answer. It's really helpful.
Gilbert said:
1 decade ago
Thanks for your help! I've never understood this since middle school.
Anil said:
1 decade ago
Please tell me next number in the series 1, 4, 5, 6, 7, 8, 9, 11, ?
Sushree sonali said:
1 decade ago
Thanks sundar. Your explanation really helps me to know the answer.
Geeta shrestha said:
3 years ago
-10, +5.
80-10 = 70.
10+5 = 15 so on,
So, the answer is 20,50.
80-10 = 70.
10+5 = 15 so on,
So, the answer is 20,50.
Alisha said:
10 years ago
80-10 = 70.
10+5 = 15.
70-10 = 60.
15+5 = 20.
Answer: 20.
10+5 = 15.
70-10 = 60.
15+5 = 20.
Answer: 20.
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