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:
129 comments Page 3 of 13.
Sarjon Basnet said:
1 year ago
Thanks a lot for explaining the answer.
(4)
Vaidik said:
1 year ago
@All.
Here, the First number will be 11 and the second number will be 7, need to check the options once again.
Correct me, If I am wrong.
Here, the First number will be 11 and the second number will be 7, need to check the options once again.
Correct me, If I am wrong.
(4)
Inapakurthi dinesh said:
11 months ago
@Hema.
Thanks for the clarification.
Thanks for the clarification.
(4)
Sommit said:
8 months ago
Thanks everyone for explaining the answer.
(4)
Sahasra said:
1 year ago
Anyone, give me a clear explanation to understand the answer?
(3)
CHAUDHARI SATISH said:
4 months ago
5 is random 11 & 5 is right Answer.
28-3 = 25 then 5.
25-4=21 then 5.
21-3= 18 then 5.
18-4= 14.
14-3= 11 then 5.
So, 28 25 5 21 18 5 14 11 5 this series.
28-3 = 25 then 5.
25-4=21 then 5.
21-3= 18 then 5.
18-4= 14.
14-3= 11 then 5.
So, 28 25 5 21 18 5 14 11 5 this series.
(3)
Rohit T George said:
2 decades ago
@star007
That is quite simple.
INTERPOLATION here means simply including the number without logic.
28 25 5 21 18 5 14
Here 5 is used as a median you can say remove the 5's
28 25 (diff 3)
21 18 (diff 3)
14 ? (diff 3)( ?=11)
Then the next number is 5 because of interpolation.
That is quite simple.
INTERPOLATION here means simply including the number without logic.
28 25 5 21 18 5 14
Here 5 is used as a median you can say remove the 5's
28 25 (diff 3)
21 18 (diff 3)
14 ? (diff 3)( ?=11)
Then the next number is 5 because of interpolation.
(2)
Vijay said:
2 months ago
Good information, Thanks all.
(2)
Raghavendra said:
2 decades ago
Please give the details of solution of this question because I cannot understand the your given clue.
(1)
Omkar said:
1 decade ago
That is quite simple.
INTERPOLATION here means simply including the number without logic.
28 25 5 21 18 5 14
Here 5 is used as a median you can say remove the 5's
28 25 (diff 3)
21 18 (diff 3)
14 ? (diff 3)( ?=11)
Then the next number is 5 because of interpolation.
28 (-3) 25 & 5
21 (-3) 18 & 5
14 (-3) 11 & 5
Ans (A) 11 5
INTERPOLATION here means simply including the number without logic.
28 25 5 21 18 5 14
Here 5 is used as a median you can say remove the 5's
28 25 (diff 3)
21 18 (diff 3)
14 ? (diff 3)( ?=11)
Then the next number is 5 because of interpolation.
28 (-3) 25 & 5
21 (-3) 18 & 5
14 (-3) 11 & 5
Ans (A) 11 5
(1)
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