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 1 of 4.
G samuel said:
4 years ago
3+1 = 4,
4+3 = 7,
7+1 = 8,
8+3 = 11,
11+1 = 12
12+3 = 15.
4+3 = 7,
7+1 = 8,
8+3 = 11,
11+1 = 12
12+3 = 15.
(31)
Rupesh Kumar Yadav said:
3 years ago
3,4 go to next 7 ,8 Till 3 different
7,8 go to next 11,12 Till 3 different
11,12 go to next 15,16 Till
so
to come 15 the answer
7,8 go to next 11,12 Till 3 different
11,12 go to next 15,16 Till
so
to come 15 the answer
(9)
Priyambika pattnayak said:
3 years ago
Good answer, Thanks everyone for explaining.
(5)
Killer said:
2 years ago
3+4 = 7
7-4 = 3
8-7 = 1
11-8 = 3
21-11 = 1.
So sum up the numbers.
7 + 3 + 1 + 3 + 1 = 15.
7-4 = 3
8-7 = 1
11-8 = 3
21-11 = 1.
So sum up the numbers.
7 + 3 + 1 + 3 + 1 = 15.
(4)
Prateek said:
4 years ago
Thanks everyone.
(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)
Sam said:
1 year ago
3, 4, 7,8, 11, 12,?
Sorted from a list like 3, 7, 11.
Another 4, 8, 12.
Everywhere 4 is added.
Ans = 11 + 4=15.
Sorted from a list like 3, 7, 11.
Another 4, 8, 12.
Everywhere 4 is added.
Ans = 11 + 4=15.
(3)
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)
Javeeth said:
4 weeks ago
This simple:
3, 4 missing 5, 6.
7, 8 missing 9, 10.
11, 12 missing 13, 14.
15, 16.
3, 4 missing 5, 6.
7, 8 missing 9, 10.
11, 12 missing 13, 14.
15, 16.
(1)
Eshwar said:
7 years ago
Thanks for the logic @Shravan Kumar.
(1)
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