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Series Completion - General Inteligence & Reasoning MCQ Questions and Answers

Learn Series Completion mcq questions and answers with easy and logical explanations - Series Completion is part of competitive reasoning mcq questions. Page-8 section-1

Each section contains 100 MCQs on Series Completion .
71
1, 5, 13,25,41,?
Discuss
Answer & Solution
Answer: Option C
Solution:
The pattern is + 4, + 8, + 12, + 16......
So, missing term = 41 + 20 = 61.
72
325, 259, 204, 160, 127, 105, ?
Discuss
Answer & Solution
Answer: Option A
Solution:
The pattern is - 66, - 55, - 44, - 33, - 22, .....
So, missing term = 105 - 11 = 94.
73
4, 7, 12, 19, 28, ?
Discuss
Answer & Solution
Answer: Option C
Solution:
The pattern is + 3, + 5, + 7, + 9, .....
So, missing term = 28 + 11 = 39.
74
5760, 960, ?, 48, 16, 8
Discuss
Answer & Solution
Answer: Option C
Solution:
The pattern is ÷ 6, ÷ 5, ÷ 4, ÷ 3, ÷ 2.
So, missing term = 960 - 5 = 192.
75
45, 54, 47, ?, 49, 56, 51, 57, 53
Discuss
Answer & Solution
Answer: Option C
Solution:
The given sequence is a combination of two series:
I. 45, 47, 49, 51, 53 and II. 54, ?, 56, 57
Clearly, II consists of consecutive natural numbers, starting from 54.
So, missing term = 55.
76
3, 8, 13, 24, 41, ?
Discuss
Answer & Solution
Answer: Option A
Solution:
The pattern followed is : nth term + (n + l)th term + (n + 1) = (n + 2)th term.
Thus, 1st term + 2nd term + 2 = 3rd term; 2nd term + 3rd term + 3 = 4th term and so on.
So, missing term = 6th term = 4th term + 5th term + 5 = 24 + 41 + 5 = 70.
77
10, 14, 26, 42, 70, ?
Discuss
Answer & Solution
Answer: Option D
Solution:
Each term in the series, except the first two terms, is 2 more than the sum of the preceding two terms.
So, missing term = (42 + 70) + 2 = 114.
78
10, 18, 28, 40, 54, 70, ?
Discuss
Answer & Solution
Answer: Option D
Solution:
The pattern is + 8, + 10, + 12, + 14, .....
So, missing term = 70 + 18 = 88.
79
8, 28, 116, 584, ?
Discuss
Answer & Solution
Answer: Option D
Solution:
The pattern is x 3 + 4, x 4 + 4, x 5 + 4,..... So, missing term = 584 x 6 + 4 = 3508.
80
One term in the number series is wrong. Find out the wrong term.
121, 143, 165, 186, 209
Discuss
Answer & Solution
Answer: Option C
Solution:
Each term in the series is obtained by adding 22 to the preceding term.

So, 186 is wrong and must be replaced by (165 + 22) i.e. 187.