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:
38 comments Page 2 of 4.
Kunal said:
7 years ago
Take alternate series 4,8,12.
Now .
4*2=8
4*3=12
4*4=16.
From here you can see every previous digit is 1 less then current digit according to the whole series.
So, the answer is 15.
Now .
4*2=8
4*3=12
4*4=16.
From here you can see every previous digit is 1 less then current digit according to the whole series.
So, the answer is 15.
(1)
Ruthvik said:
5 years ago
Thanks all for answering it.
M.RAGHURAM PGDM 1 said:
9 years ago
Sequential number by adding 3 to next sequential number so the answer is 15.
Jhansi said:
9 years ago
As per my logic, we have to add 4 to alternate series.
K.sujitha said:
9 years ago
For alternative numbers we have to add 4 to get the next number.
Vrishank said:
9 years ago
The logic is, +1, +3, +1, +3, +1, +3, and you get the answer.
Parimala said:
8 years ago
This sums odd numbers to +1 and even numbers to +3 we get the answer.
SUJIN.S said:
9 years ago
There is a simple logic.
3 + 1 = 4.
4 + 3 = 7.
7 + 1 = 8.
8 + 3 = 11.
11 + 1 = 12.
12 + 3 = 15.
This is the answer.
3 + 1 = 4.
4 + 3 = 7.
7 + 1 = 8.
8 + 3 = 11.
11 + 1 = 12.
12 + 3 = 15.
This is the answer.
Samuel Fernandes said:
1 week ago
Alternate even numbers (4, 8, 12), alternate odd numbers (3, 7, 11, 15).
Tukaram Patil said:
1 decade ago
After 3, 4 this alternative 2 nos. are missing i.e(5 & 6).
After 7, 8 this alternative 2 nos. are missing i.e(9 & 10).
After 11, 12 this alternative 2 nos. should miss i.e(13 & 14).
So D ans is 15.
After 7, 8 this alternative 2 nos. are missing i.e(9 & 10).
After 11, 12 this alternative 2 nos. should miss i.e(13 & 14).
So D ans is 15.
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