Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 2 (Q.No. 7)
Directions to Solve
Look carefully for the pattern, and then choose which pair of numbers comes next.
7.
17 17 34 20 20 31 23
Answer: Option
Explanation:
This is an alternating subtraction series with repetition. There are two different patterns here. In the first, a number repeats itself; then 3 is added to that number to arrive at the next number, which also repeats. This gives the series 17, 17, 20, 20, 23, and so on. Every third number follows a second pattern, in which 3 is subtracted from each number to arrive at the next: 34, 31, 28.
Discussion:
33 comments Page 1 of 4.
Misha said:
1 decade ago
Please help to solve this question.
Khushi said:
1 decade ago
Please explain in detail.
Sundar said:
1 decade ago
Given 17 17 34 20 20 31 23 ....
17 17 - Series 1 [Add 3; 14+3 = 17]
-- 34 - Series 2 [Sub 3; 37-3 = 34]
20 20 - Series 1 [Add 3; 17+4 = 30]
-- 31 - Series 2 [Sub 3; 34-3 = 31]
23 23*
-- 28*
26 26
-- 25
29 29
-- 22
... continued.
The stared text 23*, 28* is the required answer for the given series.
Hope this help you. Have a nice day!
17 17 - Series 1 [Add 3; 14+3 = 17]
-- 34 - Series 2 [Sub 3; 37-3 = 34]
20 20 - Series 1 [Add 3; 17+4 = 30]
-- 31 - Series 2 [Sub 3; 34-3 = 31]
23 23*
-- 28*
26 26
-- 25
29 29
-- 22
... continued.
The stared text 23*, 28* is the required answer for the given series.
Hope this help you. Have a nice day!
Poonam said:
1 decade ago
Can you explain in easy way.
Komal said:
1 decade ago
17 17 Series 1
34 is Series 2
We have to add 3 in series 1 i.e 17+3=20
After this we have to subtract 3 from Series 2 i.e 34-3=31
Then answer is 20+3=23 and 31-3= 28
Answer is 23 28
34 is Series 2
We have to add 3 in series 1 i.e 17+3=20
After this we have to subtract 3 from Series 2 i.e 34-3=31
Then answer is 20+3=23 and 31-3= 28
Answer is 23 28
Rajanna said:
1 decade ago
First of three nos 17 17 34
second 20 20 31
Third of three 23 23 28
sol: 17 +3 17+3 34-3 so on..........
second 20 20 31
Third of three 23 23 28
sol: 17 +3 17+3 34-3 so on..........
Keerthi said:
1 decade ago
17+3=20 20+3=23 17,20,23 add +3
34-3=31 31-3=28 34,31,28 are sub -3
34-3=31 31-3=28 34,31,28 are sub -3
(1)
Vamsimohan said:
1 decade ago
@Rajanna nice explanation..
(1)
Priyanka said:
1 decade ago
Ohhhhho very simple Technique : Take two series like as:
1st series: 17,17....20,20.... nw 23,23..... that means add +3
2nd series: 34....... 31.... now 28... that means subtract -3
Simple combination of two series....
So ans will be 23,28.
1st series: 17,17....20,20.... nw 23,23..... that means add +3
2nd series: 34....... 31.... now 28... that means subtract -3
Simple combination of two series....
So ans will be 23,28.
(1)
Shreshth said:
1 decade ago
Nice Priyanka....
(1)
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