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 2 of 4.
Mohan said:
8 years ago
Here,
31-29=2.
29-24=5.
So the difference is 2,5,2,5.
So, next it should be 17-2=15 so it is the answer.
31-29=2.
29-24=5.
So the difference is 2,5,2,5.
So, next it should be 17-2=15 so it is the answer.
Sruthi said:
8 years ago
31-29=2.
29-24=5.
So diff are 2,5,2,5.
Hence 15 should be the answer to get a difference of 5.
29-24=5.
So diff are 2,5,2,5.
Hence 15 should be the answer to get a difference of 5.
Jhansi said:
9 years ago
31 - 29 = 2.
29 - 24 = 5.
24 - 22 = 2.
22 - 17 = 5.
17 - 15 = 2.
So, 15 is the correct answer.
29 - 24 = 5.
24 - 22 = 2.
22 - 17 = 5.
17 - 15 = 2.
So, 15 is the correct answer.
Dr dhaniram said:
9 years ago
31 - 2 = 29.
29 - 5 = 24.
24 - 2 = 22.
22 - 5 = 17.
17 - 2 = 15.
So the missing term is 15.
29 - 5 = 24.
24 - 2 = 22.
22 - 5 = 17.
17 - 2 = 15.
So the missing term is 15.
(1)
Shantha said:
1 decade ago
Answer is 12 because:
31-29 = 2.
29-24 = 5.
24-22 = 2.
17-12 = 5.
Hence the result is 12.
31-29 = 2.
29-24 = 5.
24-22 = 2.
17-12 = 5.
Hence the result is 12.
Roshan Roy said:
10 years ago
This is a simple alternating subtraction series, which subtracts 2, then subtract 5.
Anusha said:
9 years ago
31 - 29 = 2
29 - 24 = 5
24 - 22 = 2
22 - 17 = 5
17 - 15 = 2
So, the answer is 15.
29 - 24 = 5
24 - 22 = 2
22 - 17 = 5
17 - 15 = 2
So, the answer is 15.
K.Keerthi Priya said:
10 years ago
Answer is 15 because,
31-2 = 29.
29-5 = 24.
24-2 = 22.
22-5 = 17.
17-2 = 15.
31-2 = 29.
29-5 = 24.
24-2 = 22.
22-5 = 17.
17-2 = 15.
Raju.u said:
9 years ago
Take alternatively.
31 - 2 = 29
24 - 2= 22
17 - 2 = 15
So next number is 15.
31 - 2 = 29
24 - 2= 22
17 - 2 = 15
So next number 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.
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