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:
128 comments Page 4 of 13.
Kumar said:
1 decade ago
After 2 numbers 5 is common.
28 25 difference b/t them 3.
21 18 21-18 = 3.
14 ? 14-? = 3 11, followed by 5.
28 25 difference b/t them 3.
21 18 21-18 = 3.
14 ? 14-? = 3 11, followed by 5.
Mattoo said:
1 decade ago
I looked at it as "28-25=3+2=5", then "21-18=3+2=5", then "14-11=3+2=5", and I arrived at the correct answer.
Arul said:
1 decade ago
28 25 5 21 18 5 14 11 5...
28-25 = 3+2 = 5.
21-18 = 3+2 = 5.
14-11 = 3+2 = 5.
So the answer is 11 5.
28-25 = 3+2 = 5.
21-18 = 3+2 = 5.
14-11 = 3+2 = 5.
So the answer is 11 5.
PALLAVI KRISHNA GOLLAPINNI said:
10 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.
Raghavendra said:
2 decades ago
Please give the details of solution of this question because I cannot understand the your given clue.
(1)
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.
Pradeep said:
1 decade ago
28+25+5 = 58.
21+18+5 = 44.
14+.... = ?
58-44 = 14.
Then 44-14 = 30;
So check ans 14+11+5 = 30.
21+18+5 = 44.
14+.... = ?
58-44 = 14.
Then 44-14 = 30;
So check ans 14+11+5 = 30.
Lipi said:
9 years ago
28 - (25) =3 5 =25 5.
21 - (18) =3 5 =18 5.
14 - (?) =3 5 = ? 5.
= 14 - (11) = 3 5 = 11 5 (ans).
21 - (18) =3 5 =18 5.
14 - (?) =3 5 = ? 5.
= 14 - (11) = 3 5 = 11 5 (ans).
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.
Suneel 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.
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