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 8 of 13.
Surya said:
9 years ago
Thanks @Rohit.
Gowthami said:
9 years ago
28 - 3 = 25 & 5.
21 - 3 = 18 & 5.
14 - 3 = 11 & 5.
21 - 3 = 18 & 5.
14 - 3 = 11 & 5.
Jyotsana said:
9 years ago
I get the nice explanations. Thank you all.
Trilok Tak said:
9 years ago
28 25 5 21 18 5 14 ? ?
28 (-3) = 25 (Repeat)5.
21 (-3) = 18 (Repeat)5.
14 (-3) =11 (Repeat)5.
So,
28 25 5 21 18 5 14 11 5.
28 (-3) = 25 (Repeat)5.
21 (-3) = 18 (Repeat)5.
14 (-3) =11 (Repeat)5.
So,
28 25 5 21 18 5 14 11 5.
Surinder Singh said:
9 years ago
25 - 18 = 7.
21 - 14 = 7.
18 - 7 = 11.
Then 5 is repeated for every 3rd number.
21 - 14 = 7.
18 - 7 = 11.
Then 5 is repeated for every 3rd number.
Vinay juwantha said:
9 years ago
Easy to solve the series. Thank you all.
PALLAVI KRISHNA GOLLAPINNI said:
9 years ago
28 - 3 = 25 & 5
25 - 4 = 21 & 5
21 - 3 = 18 & 5
18 - 4 = 14 & 5
14 - 3 = 11 & 5
It is a simple logic.
25 - 4 = 21 & 5
21 - 3 = 18 & 5
18 - 4 = 14 & 5
14 - 3 = 11 & 5
It is a simple logic.
Vanaja said:
10 years ago
Nice explanation.
Jatadhari sahoo said:
10 years ago
Its very simple question.
5 is common factor 2 number like:
28.....25....(5).
21.....18....(5).
14.....__....(5).
So 28---25 difference between them 3.
21---18.
= 21-18 = 3.
14 ? 11 - ? = 3 11, followed by 5.
Answer is 11.
5 is common factor 2 number like:
28.....25....(5).
21.....18....(5).
14.....__....(5).
So 28---25 difference between them 3.
21---18.
= 21-18 = 3.
14 ? 11 - ? = 3 11, followed by 5.
Answer is 11.
Talwinder said:
1 decade ago
Show the mind intelligence.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers