Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 1 (Q.No. 10)
Directions to Solve
In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much
10.
Look at this series: 31, 29, 24, 22, 17, ... What number should come next?
Answer: Option
Explanation:
This is a simple alternating subtraction series, which subtracts 2, then 5.
Discussion:
39 comments Page 1 of 4.
Prathyusha said:
1 decade ago
31-2=29
24-2=22
17-2=15
15 is answer
24-2=22
17-2=15
15 is answer
Udit said:
1 decade ago
31-24=7
29-22=7
24-17=7
22-7=15
29-22=7
24-17=7
22-7=15
ANTHONI NARESH said:
1 decade ago
I said that.
31-2=29.
29-5=24.
24-2=22.
22-5=17.
17-2=15.
Answer is 15.
31-2=29.
29-5=24.
24-2=22.
22-5=17.
17-2=15.
Answer is 15.
Sakshi Vaid said:
1 decade ago
Dear all,
Its a series.
31,29 (2 is subtracted).
29,24 (5 is subtracted).
24,22 (2 is subtracted).
22,17 (5 is to subtracted) .
So now from 17 (2 will be subtracted and the answer is 15).
Its a series.
31,29 (2 is subtracted).
29,24 (5 is subtracted).
24,22 (2 is subtracted).
22,17 (5 is to subtracted) .
So now from 17 (2 will be subtracted and the answer is 15).
Ashok said:
1 decade ago
31-29 = 2.
24-22 = 2, So here differences is 2 so 17-2 = 15.
15 is answer.
24-22 = 2, So here differences is 2 so 17-2 = 15.
15 is answer.
Jagani said:
1 decade ago
Dear friends.
31-2=29;
29-24=5;
17-15=2;
Subtract 2 & 5.
31-2=29;
29-24=5;
17-15=2;
Subtract 2 & 5.
Jagani said:
1 decade ago
Dear friends.
31-2=29;
29-24=5;
17-15=2;
Subtract 2 & 5.
31-2=29;
29-24=5;
17-15=2;
Subtract 2 & 5.
Jagani said:
1 decade ago
Dear friends.
31-2=29;
29-24=5;
17-15=2;
Subtract 2 & 5.
31-2=29;
29-24=5;
17-15=2;
Subtract 2 & 5.
Premkumar said:
1 decade ago
31-29 30 is leave.
29-24 28, 27, 26, 25 is leave.
24-22 23 is leave.
22-17 21, 20, 19, 18 is leave.
So17-15 16 is leave. So answer is 15.
29-24 28, 27, 26, 25 is leave.
24-22 23 is leave.
22-17 21, 20, 19, 18 is leave.
So17-15 16 is leave. So answer is 15.
Pawan sharma said:
1 decade ago
31-2 = 29.
24-2 = 22.
17-2 = 15.
24-2 = 22.
17-2 = 15.
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