This EduRev document offers 15 Multiple Choice Questions (MCQs) from the topic Series (Level - 3). These questions are of Level - 3 difficulty and will assist you in the preparation of CAT & other MBA exams. You can practice/attempt these CAT Multiple Choice Questions (MCQs) and check the explanations for a better understanding of the topic.
Question for Practice Questions Level 3: Series
Try yourself:Directions: Find the missing term in the following number series.
3, 4.5, ?, 3.5, 1, 4.5, 3, 7.5
Explanation
In the given series, addition and subtraction take place alternately. The numbers being added are 1.5, 2.5, 3.5, 4.5, while the numbers being subtracted are 3.5, 2.5, 1.5.
3 + 1.5 = 4.5
4.5 - 3.5 = 1
1 + 2.5 = 3.5
3.5 - 2.5 = 1
1 + 3.5 = 4.5
4.5 - 1.5 = 3
3 + 4.5 = 7.5
Thus, the missing number is 1.
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Question for Practice Questions Level 3: Series
Try yourself:What should come in place of question mark in the following number series?
280, 142, 73, ?, 21.25
Explanation
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Question for Practice Questions Level 3: Series
Try yourself:Directions: Find out the wrong number in the given sequence.
7, 4, 6, 9, 20, 52.5, 160.5
Explanation
The given number series is based on the following pattern:
Hence, the wrong number is 6.
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Question for Practice Questions Level 3: Series
Try yourself:Which of the following will take the place of '?' in the following series?
2.5, 5, 10, 17.5, 27.5, ?
Explanation
The sequence follows the pattern given below.
2.5 + (1 × 2.5) = 2.5 + 2.5 = 5.0
5.0 + (2 × 2.5) = 5 + 5 = 10.0
10.0 + (3 × 2.5) = 10 + 7.5 = 17.5
17.5 + (4 × 2.5) = 17.5 + 10.0 = 27.5
27.5 + (5 × 2.5) = 27.5 + 12.5 = 40
Therefore, the missing number is 40.
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Question for Practice Questions Level 3: Series
Try yourself:Which of the following will take the place of '?' in the following series?
5, 6, 13, 38, 117, ?
Explanation
The sequence is going as follows.
5 + (31 - 2) = 6
6 + (32 - 2) = 13
13 + (33 - 2) = 38
38 + (34 - 2) = 117
117 + (35 - 2) = 358
Hence, the missing number is 358.
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Question for Practice Questions Level 3: Series
Try yourself:Which of the following will take the place of '?' in the following series?
24, 41, 54, 63, 68, ?
Explanation
Since,
41 - 24 = 17
54 - 41 = 13
63 - 54 = 9
68 - 63 = 5
⇒ ? - 68 = 1
⇒ ? = 69
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Question for Practice Questions Level 3: Series
Try yourself:What should come in place of the question mark (?) in the following series?
13, 27, ?, 78, 119, 173
Explanation
The series is in the following pattern.
13 + 42 - 2 = 27
27 + 52 - 4 = 48
48 + 62 - 6 = 78
78 + 72 - 8 = 119
119 + 82 - 10 = 173
Thus, the missing number is 48.
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Question for Practice Questions Level 3: Series
Try yourself:Find the missing term and complete the sequence.
163, 134, 111, 94, 83, ?
Explanation
The pattern is given below:
163 - 29 = 134
134 - 23 = 111
111 - 17 = 94
94 - 11 = 83
83 - 5 = 78
So, 78 is the missing number.
Alternative solution:
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Question for Practice Questions Level 3: Series
Try yourself:Find the missing term in the following number series.
2, 5.5, ?, 136.5, 1648
Explanation
The series follows the following pattern:
2 × 1.5 + 2.5 = 5.5
5.5 × 3 + 5 = 21.5
21.5 × 6 + 7.5 = 136.5
136.5 × 12 + 10 = 1648
So, the missing number is 21.5.
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Question for Practice Questions Level 3: Series
Try yourself:Directions: In the following letter series, some of the letters are missing which are given in that order as one of the alternatives below it. Choose the correct alternative.
__ op __ mo __ n __ __ pnmop __
Explanation
The series is mopn/mopn/mopn/mopn. Thus, the pattern 'mopn' is repeated.
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Question for Practice Questions Level 3: Series
Try yourself:What should come in place of the question mark (?) in the following sequence?
324, 270, ?, 187.5, 156.25
Explanation
324 × (5/6) = 270
270 x (5/6) = 225
225 x (5/6) = 187.5
187.5 x (5/6) = 156.25
So, the sequence is:
324, 270, 225, 187.5, 156.25
Therefore, the missing number is 225.
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Question for Practice Questions Level 3: Series
Try yourself:Directions: Find out the wrong number in the given sequence.
4, 6, 12, 30, 75, 315, 1260
Explanation
The given number series is based on the following pattern:
Hence, the wrong number is 75.
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Question for Practice Questions Level 3: Series
Try yourself:Find the missing term in the following number series.
17, 33.5, 133, ?, 6370
Explanation
The series follows the following pattern:
17 × 2 - 0.5 = 34 - 0.5 = 33.5
33.5 × 4 - 1 = 134 - 1 = 133
133 × 6 - 1.5 = 798 - 1.5 = 796.5
796.5 × 8 - 2 = 6372 - 2 = 6370
So, the missing number is 796.5.
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Question for Practice Questions Level 3: Series
Try yourself:Find the missing term in the following number series.
2, 6, 21, ?, 445, 2676
Explanation
The series follows the following pattern:
1 × 1 + 1 = 2
(2 × 2) + 2 = 6
(6 × 3) + 3 = 21
(21 × 4) + 4 = 88
(88 × 5) + 5 = 440 + 5 = 445
(445 × 6) + 6 = 2670 + 6 = 2676
So, the missing number is 88.
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Question for Practice Questions Level 3: Series
Try yourself:What should come in place of the question mark (?) in the following number series?
56, 84, 126, 189, ?
Explanation
From the given sequence, we notice that
56 × 3 ÷ 2 = 84
84 × 3 ÷ 2 = 126
126 × 3 ÷ 2 = 189
189 × 3 ÷ 2 = 283.5
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