Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 2 (Q.No. 1)
Directions to Solve
Look carefully for the pattern, and then choose which pair of numbers comes next.
1.
28 25 5 21 18 5 14
Answer: Option
Explanation:
This is an alternating subtraction series with the interpolation of a random number, 5, as every third number. In the subtraction series, 3 is subtracted, then 4, then 3, and so on.
Discussion:
126 comments Page 6 of 13.
Liton said:
8 years ago
28 25 5 21 18 5 14 ? ?
28 - 7 = 21
25 - 7 = 18
5
21 - 7 = 14
18 - 7 = 11
5
14
Ans= 11.
Ans= 5.
28 - 7 = 21
25 - 7 = 18
5
21 - 7 = 14
18 - 7 = 11
5
14
Ans= 11.
Ans= 5.
Sonia said:
8 years ago
Nice logic, Thank you @Rohit.
Minnu abraham said:
8 years ago
Excellent logic @Rohit.
Kinda kumar said:
8 years ago
I cannot understand this. Please anyone this.
Mennappan said:
8 years ago
median 5.
differ 3.
So 14-3=11.
differ 3.
So 14-3=11.
Abhinay said:
8 years ago
MORE SIMPLE.
Use matrix 3*3.
28 25 5
21 18 5
14 11 5
06 04 5
Cross number series left -10 right -4.
Use matrix 3*3.
28 25 5
21 18 5
14 11 5
06 04 5
Cross number series left -10 right -4.
Gauravgupta said:
8 years ago
This is wrong way to solve this series.
Right way is here.
28-3=25.
25-4=21.
21-3=18.
18-4=14.
So first we subtract 3 n then 4 according to series we subtract 3 before 4 so.
14-3=11.
And 5 is interpolation.
Right way is here.
28-3=25.
25-4=21.
21-3=18.
18-4=14.
So first we subtract 3 n then 4 according to series we subtract 3 before 4 so.
14-3=11.
And 5 is interpolation.
Kamlesh pache said:
8 years ago
Thank you all for the given explanation. I helps me a lot.
Utkarsh said:
8 years ago
As difference is;
25 - 18 = 7
18 - 7 = 11 as first digit,
And next will be common as 5.
25 - 18 = 7
18 - 7 = 11 as first digit,
And next will be common as 5.
Akhilesh kumar said:
8 years ago
You are right @Mahesh.
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