Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 2 (Q.No. 16)
Directions to Solve
Look carefully for the pattern, and then choose which pair of numbers comes next.
16.
9 12 11 14 13 16 15
Answer: Option
Explanation:
This is a simple alternating addition and subtraction series. First, 3 is added, then 1 is subtracted, then 3 is added, 1 subtracted, and so on.
Discussion:
8 comments Page 1 of 1.
Vkas said:
8 years ago
Why not?
12-9 = 3
14-11 = 3
16-13 = 3
(18)-15 = 3
(21)-18 = 3
So Why not option B? 18 21
12-9 = 3
14-11 = 3
16-13 = 3
(18)-15 = 3
(21)-18 = 3
So Why not option B? 18 21
(5)
Sayli said:
8 years ago
9 12 11 14 13 16 15 :
10 9 12 11=9 10 11 12
12 11 14 13=11 12 13 14
14 13 16 15=13 14 15 16
So,16 15 18 17=15 16 17 18.
10 9 12 11=9 10 11 12
12 11 14 13=11 12 13 14
14 13 16 15=13 14 15 16
So,16 15 18 17=15 16 17 18.
Chandan kamra said:
1 decade ago
2+2+2+2+2+2+2+2 this method is simply.
9+2=11.
12+2=14.
11+2=13.
14+2=16.
13+2=15.
16+2=18.
15+2=17.
9+2=11.
12+2=14.
11+2=13.
14+2=16.
13+2=15.
16+2=18.
15+2=17.
(1)
T.sarath varma said:
1 decade ago
9+3 = 12.
12-1 = 11.
11+3 = 14.
14-1 = 13.
13+3 = 16.
16-1 = 15.
15+3 = 18.
18-1 = 17.
12-1 = 11.
11+3 = 14.
14-1 = 13.
13+3 = 16.
16-1 = 15.
15+3 = 18.
18-1 = 17.
Jitu said:
1 decade ago
12+2 = 14.
14+2 = 16.
16+2 = 18.
18 is next number.
9+2 = 11.
11+2 = 13.
13+2 = 15.
15+2 = 17.
17 next number so (17,18) is the answer.
14+2 = 16.
16+2 = 18.
18 is next number.
9+2 = 11.
11+2 = 13.
13+2 = 15.
15+2 = 17.
17 next number so (17,18) is the answer.
(1)
Keerthi said:
1 decade ago
Another way is:
First you take 9,11,13,15 (9+2=11,11+2=13,13+2=15,15+2=17)
Second you take out second numbers 12,14,16(12+2=14,14+2=16,16+2=18)
Ans: 18 17
First you take 9,11,13,15 (9+2=11,11+2=13,13+2=15,15+2=17)
Second you take out second numbers 12,14,16(12+2=14,14+2=16,16+2=18)
Ans: 18 17
(1)
Akanksha said:
1 decade ago
Simply it follows the pattern:
9..+3..12..-1..11..+3..14..-1..13..+3..16..-1..15
9..+3..12..-1..11..+3..14..-1..13..+3..16..-1..15
Namratha nayak said:
1 decade ago
9 12 11 14 13 16 15 ----> +3 1 +3 1 +3 1 +3 1
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