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Verbal Reasoning - Series Completion

Exercise : Series Completion - Section 3
Directions to Solve

In this type of questions, one term in the number series is wrong. Find out the wrong term.

26.
5, 27, 61, 122, 213, 340, 509
27
61
122
509
Answer: Option
Explanation:

The terms of the series are (23 - 3), (33 - 3), (43 - 3), (53 - 3), (63 - 3), (73 - 3),

(83-3).

So, 27 is wrong and must be replaced (33 - 3) i.e. 24.

27.
3, 7, 15, 39, 63, 127, 255, 511
15
39
63
127
Answer: Option
Explanation:

The correct pattern is x 2 + 1.

So, 39 is wrong and must be replaced by (15 x 2 + 1) i.e. 31.

28.
380, 188, 92, 48, 20, 8, 2
8
20
48
188
Answer: Option
Explanation:

The correct pattern is - 192, - 96, - 48, - 24, - 12, - 6.

So, 48 is wrong and must be replaced by (92 - 48) i.e. 44.

29.
16, 22, 30, 45, 52, 66
30
45
52
66
Answer: Option
Explanation:

The correct pattern is + 6, + 8, + 10, + 12, + 14.

So, 45 is wrong and must be replaced by (30 + 10) i.e. 40.

30.
10, 26, 74, 218, 654, 1946, 5834
26
74
218
654
Answer: Option
Explanation:

The correct pattern is x 3 - 4.

So, 654 is wrong and must be replaced by (218 x 3 - 4) i.e. 650.

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