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 7 of 9.
Angel said:
1 decade ago
Here two series go at a time.
First 80, 70, 60, .. (subtract 10).
Second 10, 15, .. (add 5).
Now join them 80, 10, 70, 15, 60, 20, 50, 25, 40, 30, 30, 35, 20, .
So according to the question our answer should be 20.
First 80, 70, 60, .. (subtract 10).
Second 10, 15, .. (add 5).
Now join them 80, 10, 70, 15, 60, 20, 50, 25, 40, 30, 30, 35, 20, .
So according to the question our answer should be 20.
Pawan singh said:
1 decade ago
80 70 60 ..... 10, 15, then? 10+5 = 15+5 = 20 is the answer.
Akram said:
1 decade ago
I Don't understand please explain me in a simple Fraction.
Nand Kishore said:
1 decade ago
Thanks a lot to the person who explained in detail.
Vinil said:
1 decade ago
Third number = first number-10, fifth number = third number-10.
Fourth number = second number + 5, fourth number + 5 = sixth number.
Therefore here 20 is answer.
Fourth number = second number + 5, fourth number + 5 = sixth number.
Therefore here 20 is answer.
Varun said:
1 decade ago
10+5=15
15+5=20
15+5=20
Anil said:
1 decade ago
Please tell me next number in the series 1, 4, 5, 6, 7, 8, 9, 11, ?
RAVI KUMAR said:
1 decade ago
Thanks sundar
Sushree sonali said:
1 decade ago
Thanks sundar. Your explanation really helps me to know the answer.
Saba marium said:
1 decade ago
Thanks for explaining.
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