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Logical Reasoning - Number Series

Exercise : Number Series - Type 2
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
14 13
18 21
14 17
12 13
18 17
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.
17.
4 8 22 12 16 22 20 24
28 32
28 22
22 28
32 36
22 26
Answer: Option
Explanation:
This is an alternating repetition series, with a random number, 22, interpolated as every third number into an otherwise simple addition series. In the addition series, 4 is added to each number to arrive at the next number.
18.
40 40 31 31 22 22 13
13 4
13 5
4 13
9 4
4 4
Answer: Option
Explanation:
This is a subtraction series with repetition. Each number repeats itself and then decreases by 9.
19.
1 10 7 20 13 30 19
26 40
29 36
40 25
25 31
40 50
Answer: Option
Explanation:
Here, every other number follows a different pattern. In the first series, 6 is added to each number to arrive at the next. In the second series, 10 is added to each number to arrive at the next.
20.
10 20 25 35 40 50 55
70 65
60 70
60 75
60 65
65 70
Answer: Option
Explanation:
This is an alternating addition series, in which 10 is added, then 5, then 10, and so on.
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