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 2 of 13.
Sri sowmya said:
10 months ago
Thank you for the useful questions and explanations.
(4)
Kumar sujit said:
1 year ago
11 is the correct answer.
(5)
Nitish kumar said:
1 year ago
Very nice, Thanks for explaining the answer.
(6)
Hema said:
1 year ago
diff(28 - 25) = 3,
5
diff(21-18) = 3,
5,
diff(14-x) = 3.
Then, 14-3=x=>x=11.
5
Hence 28 25 5 21 18 5 14 11 5 is the correct order.
5
diff(21-18) = 3,
5,
diff(14-x) = 3.
Then, 14-3=x=>x=11.
5
Hence 28 25 5 21 18 5 14 11 5 is the correct order.
(123)
Daleswar MD said:
2 years ago
Thanks all for the explanation.
(7)
Swarit VA said:
2 years ago
Thanks all for explaining the answer.
(8)
Ajit said:
2 years ago
Thanks all for explaining it.
(9)
Sheshadri DB said:
2 years ago
The random number 5 is every third number.
Subtraction series 3,4,3,4,3,4,3,4.
hence
28-3=25 -> 28,25,5.
25-4=21 -> 21.
21-3=18 -> 21,18,5.
18-4=14 ->14.
14-3=11 ->14,11,5.
11,5 is the answer.
28, 25, 5, 21, 18, 5, 14, 11, 5.
Subtraction series 3,4,3,4,3,4,3,4.
hence
28-3=25 -> 28,25,5.
25-4=21 -> 21.
21-3=18 -> 21,18,5.
18-4=14 ->14.
14-3=11 ->14,11,5.
11,5 is the answer.
28, 25, 5, 21, 18, 5, 14, 11, 5.
(39)
Sayfulla said:
2 years ago
Thank you for explaining the answer.
(7)
Arosej said:
2 years ago
Good solution, Thanks, I can understand.
(10)
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