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 3 of 4.
K.sujitha said:
9 years ago
Subtract the alternative numbers with 7, then 22 - 7 = 15.
M.RAGHURAM PGDM 1 said:
9 years ago
Taking difference 2 and 5 alternatively. So the answer is 15.
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)
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.
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.
Roshan Roy said:
10 years ago
This is a simple alternating subtraction series, which subtracts 2, then subtract 5.
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.
Wozebili said:
1 decade ago
This is quiet different. If the number in sequence is 17, the next number is 3. What is the first number? Please show working.
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.
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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