Logical Reasoning - Number Series - Discussion

Discussion Forum : Number Series - Type 1 (Q.No. 16)

Number Series

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.

Cyril C Oommen said: 8 years ago

Thanks for the clarification.

Santoshi said: 8 years ago

Thank you all.

Cherishma said: 8 years ago

10, 15, 30, 75, 225 What is the number after 225?

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.

Priyanka said: 8 years ago

thank you all for giving the explanation.

Sai Abhipsa said: 8 years ago

Thanks to all for the explanation.

Ravindra said: 8 years ago

The 1st pattern like 80-70-60 here added 10.

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

Juliana said: 8 years ago

Thanks a lot they right its so easy first you need is
80, 10, 70, 15, 60, 20.

The first pattern is 80 you need to subtract by 10 .in the second add 5 like this
80-10 = 70,
70-10 = 60 and then so on.

The second pattern adds 5 like this
10 + 5 = 15
15 + 5 = 20 and then so on.

(1)

Uday said: 8 years ago

Thanks to all for providing this explanation.

Kripal Sharma said: 8 years ago

Thanks to all for this explanation.

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