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:
39 comments Page 2 of 4.
VAIBHAV said:
6 years ago
It's very easy to see.
They combine odd and even number they give alternate odd and even no.
3,4,7,8,11,12,__?
3,7,11,15 are odd.
4,8,12are even,
Ans -15.
They combine odd and even number they give alternate odd and even no.
3,4,7,8,11,12,__?
3,7,11,15 are odd.
4,8,12are even,
Ans -15.
(4)
Bhavani said:
6 years ago
3 + 1 = 4,
4 + 3 = 7,
7 + 1 = 8,
8 + 3 = 11,
11 + 1 = 13,
12 + 3 = 15.
4 + 3 = 7,
7 + 1 = 8,
8 + 3 = 11,
11 + 1 = 13,
12 + 3 = 15.
(2)
Eshwar said:
7 years ago
Thanks for the logic @Shravan Kumar.
(1)
Kunal said:
8 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)
Parimala said:
8 years ago
This sums odd numbers to +1 and even numbers to +3 we get the answer.
Vrishank said:
9 years ago
The logic is, +1, +3, +1, +3, +1, +3, and you get the answer.
K.sujitha said:
9 years ago
For alternative numbers we have to add 4 to get the next number.
Jhansi said:
9 years ago
As per my logic, we have to add 4 to alternate series.
M.RAGHURAM PGDM 1 said:
9 years ago
Sequential number by adding 3 to next sequential number so the answer is 15.
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.
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