Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 4 (Q.No. 4)
Directions to Solve
Find the number that fits somewhere into the middle of the series. Some of the items involve both numbers and letters
4.
Look at this series: 70, 71, 76, __, 81, 86, 70, 91, ... What number should fill the blank?
Answer: Option
Explanation:
In this series, 5 is added to the previous number; the number 70 is inserted as every third number.
Discussion:
44 comments Page 4 of 5.
Garima Gupta said:
1 decade ago
Very simple 70 is repeting after every two series, thus I hope 70 is the right answer
70, 71, 76, __, 81, 86, 70, 91,
70, 71, 76, __, 81, 86, 70, 91,
Isha said:
1 decade ago
@Anirudh- 3, 4, 6, 8, 12, 14, ?.. ans is 18,20,24.....
concept is simple-- its prime no. + 1
so here it is
(2+1) (3+1) (5+1) (7+!) (11+1) (13+1) ..(17+1) (19+1) (23+1)..n so on...
concept is simple-- its prime no. + 1
so here it is
(2+1) (3+1) (5+1) (7+!) (11+1) (13+1) ..(17+1) (19+1) (23+1)..n so on...
Archana said:
1 decade ago
Why is 70 taken as a constant number here?
Anish said:
1 decade ago
70 is const. As it keeps on just repeating. It's the logic behind. Afterall it's logical reasoning test.
Sittam said:
9 years ago
I also can't understand. Please help me.
Ajay said:
1 decade ago
3, 4, 6, 8, 12, 14, ?..
There are two diffrent series. Its 3, 6, 12,..24...48(3*2, 6*2, 12*2,... Logic).
4, 8, 14...(4,4+4, 4+4+6, 4+4+6+8, 4+4+6+8+10...Logic).
4, 8, 14, 22, 32 ..
Answer 3, 4, 6, 8, 12, 14, 24, 22, 48, 32..
There are two diffrent series. Its 3, 6, 12,..24...48(3*2, 6*2, 12*2,... Logic).
4, 8, 14...(4,4+4, 4+4+6, 4+4+6+8, 4+4+6+8+10...Logic).
4, 8, 14, 22, 32 ..
Answer 3, 4, 6, 8, 12, 14, 24, 22, 48, 32..
Ramkumar said:
1 decade ago
Hai @Anirudh.
Here 3, 4, 6, 8, 12, 14, ?
It is a series of: prime no.(2 3 5 7 11 13 17 19.....) + 1.
So next prime no: 17.
Then: 17+1=18.
Here 3, 4, 6, 8, 12, 14, ?
It is a series of: prime no.(2 3 5 7 11 13 17 19.....) + 1.
So next prime no: 17.
Then: 17+1=18.
Yadavji said:
1 decade ago
There is no logic behind why 70 has taken as constant you have to assume it by your reasoning skill.
Ravi said:
1 decade ago
I think the answer should be 96 then the next number will be 70 as it is constant after 2 digits.
Kinkaradhikary said:
1 decade ago
70, 71, 76.
70, 81, 86.
70, 91, .
Answer: 70+0=70.
71+10=81.
76+10=86.
Correct answer 70.
70, 81, 86.
70, 91, .
Answer: 70+0=70.
71+10=81.
76+10=86.
Correct answer 70.
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