Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 1 (Q.No. 8)
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
8.
Look at this series: 3, 4, 7, 8, 11, 12, ... What number should come next?
Answer: Option
Explanation:
This alternating addition series begins with 3; then 1 is added to give 4; then 3 is added to give 7; then 1 is added, and so on.
Discussion:
41 comments Page 5 of 5.
Rajesh Pradhan said:
2 decades ago
This is a very good question.
There is an alternative method for solving this problem.
IE, digit at even & odd places are changes simultaneously.
IE, digit at odd place:- 3+4=7, 7+4=11, 11+4=15 and so on.
& digit at even place:- 4+4=8, 8+4=12 and so on.
Thus here, the answer is 11+4=15.
There is an alternative method for solving this problem.
IE, digit at even & odd places are changes simultaneously.
IE, digit at odd place:- 3+4=7, 7+4=11, 11+4=15 and so on.
& digit at even place:- 4+4=8, 8+4=12 and so on.
Thus here, the answer is 11+4=15.
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