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
11 5
10 7
11 8
5 10
10 5
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:
128 comments Page 5 of 13.

Glamour Dev said:   6 years ago
28 25 5 21 18 5 14
28-25=3
25-21=4
21-18=3
18-14=4

once first 3&4 18-11=3
answer=11.

Kpr said:   6 years ago
Nice explanation, Thanks @Rohit.

Kamaraj.S said:   7 years ago
5 is the interpolation of the random number.

Bhavya said:   7 years ago
Nice answer, Thanks @Rohit.

PrabhaT singh said:   7 years ago
Please anyone help me by explaining the answer clearly.

Saurav said:   7 years ago
@All.

Look at the series carefully on 3rd postion of series "5" is repeating number and the common difference between 1st postion and 2nd postion number is 3 (.i.e. 28-25=3, 21-18=3 so next number should be 14-3=11), so ans for this question is 11 5.

Sushant kumar behera said:   7 years ago
Thanks for explaining the logic of this.

Annie said:   7 years ago
Nice logic, thank you @Rohit.

Siddu goud said:   8 years ago
How come answer is 11 5? PLease explain me, I am not getting it.

Jitendra rajput said:   8 years ago
Please give this solutoin.


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