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 2 of 7.
Monica said:
1 decade ago
Can you explain the addition series in detail? please.
(1)
Fama said:
4 years ago
2529 is the correct answer.
(1)
Anshu said:
5 years ago
@Sundar and @Navjot.
Good explanation, Thanks.
Good explanation, Thanks.
(1)
Sushil said:
5 years ago
25 29 is the correct answer.
(1)
Srikanth Singh said:
6 years ago
Thanks @Sundar.
(1)
Salman khan said:
8 years ago
8 11 21 15 18 21 22 25 21
8 + 3 = 11
21
15 + 3 = 18
21
22 + 3 = 25
22.
8 + 3 = 11
21
15 + 3 = 18
21
22 + 3 = 25
22.
(1)
Durai said:
1 decade ago
This is simply confusing. I think, this question is wrong.
(1)
Sankari said:
1 decade ago
8+3 = 11
11+4 = 15
15+3 = 18
18+4 = 22
From above we can conclude as difference b/w first two no.is 3.
Third no. is interpolation, it is repeated as every third no.
so next pair is 25 21 (22+3 =25)
11+4 = 15
15+3 = 18
18+4 = 22
From above we can conclude as difference b/w first two no.is 3.
Third no. is interpolation, it is repeated as every third no.
so next pair is 25 21 (22+3 =25)
(1)
Prathyusha said:
1 decade ago
11-8=3
15-18=3
22-25=3
so 25 21 is answer
15-18=3
22-25=3
so 25 21 is answer
(1)
Priya said:
1 decade ago
Among all the above solution, I think Sundar is right.
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