Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 2 (Q.No. 2)
Directions to Solve
Look carefully for the pattern, and then choose which pair of numbers comes next.
2.
8 11 21 15 18 21 22
Answer: Option
Explanation:
This is an alternating addition series, with a random number, 21, interpolated as every third number. The addition series alternates between adding 3 and adding 4. The number 21 appears after each number arrived at by adding 3.
Discussion:
66 comments Page 6 of 7.
Dinesh said:
6 years ago
Thanks for explaining the answer @Sundar.
Srikanth Singh said:
6 years ago
Thanks @Sundar.
(1)
Sarveshwar said:
6 years ago
8+3=11,
11-21=10
10+3=13.
15-18=3,
18-21=3
3+3=6.
Then 13-6=7.
22+3=25, 25-4 = 21.
22,25,21.
11-21=10
10+3=13.
15-18=3,
18-21=3
3+3=6.
Then 13-6=7.
22+3=25, 25-4 = 21.
22,25,21.
Sushil said:
5 years ago
25 29 is the correct answer.
(1)
Anshu said:
5 years ago
@Sundar and @Navjot.
Good explanation, Thanks.
Good explanation, Thanks.
(1)
Fama said:
4 years ago
2529 is the correct answer.
(1)
Shital ingale said:
3 years ago
8 + 3 =11. _____21.
15 + 3 =18. _______21.
So.
22 + 3 = 25. __________21.
Then, Answer : 25 21.
15 + 3 =18. _______21.
So.
22 + 3 = 25. __________21.
Then, Answer : 25 21.
(34)
Pooja said:
3 years ago
Great explanation. Thanks all.
(5)
Aakriti said:
3 years ago
It's so confusing. Anyone, help me to get it.
(7)
Anjali said:
3 years ago
21 is common. Choose the difference b/w alternate numbers.
8 11 diff is 7
15 18
22
8-15 = 7
11-18 =7
So, 18 = 7 = 25 :22 25 is the answer.
8 11 diff is 7
15 18
22
8-15 = 7
11-18 =7
So, 18 = 7 = 25 :22 25 is the answer.
(12)
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