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 2 of 9.
Samstarnovi said:
1 decade ago
Its very easy guys-
80-10=70
10=5=15
and so on.
80-10=70
10=5=15
and so on.
Gilbert said:
1 decade ago
Thanks for your help! I've never understood this since middle school.
VIKAS DHIMAN said:
1 decade ago
80,70,60,50-> A series with decreasment of 10.
10,15,20,25-> A series with increasment of 5.
10,15,20,25-> A series with increasment of 5.
Saba marium said:
1 decade ago
Thanks for explaining.
Sushree sonali said:
1 decade ago
Thanks sundar. Your explanation really helps me to know the answer.
RAVI KUMAR said:
1 decade ago
Thanks sundar
Anil said:
1 decade ago
Please tell me next number in the series 1, 4, 5, 6, 7, 8, 9, 11, ?
Varun said:
1 decade ago
10+5=15
15+5=20
15+5=20
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.
Nand Kishore said:
1 decade ago
Thanks a lot to the person who explained in detail.
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