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Practice Test: Wrong Number Series - CAT MCQ


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10 Questions MCQ Test Logical Reasoning (LR) and Data Interpretation (DI) - Practice Test: Wrong Number Series

Practice Test: Wrong Number Series for CAT 2024 is part of Logical Reasoning (LR) and Data Interpretation (DI) preparation. The Practice Test: Wrong Number Series questions and answers have been prepared according to the CAT exam syllabus.The Practice Test: Wrong Number Series MCQs are made for CAT 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Practice Test: Wrong Number Series below.
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Practice Test: Wrong Number Series - Question 1

Wrong Number Series: 59, 41, 68, 33, 77, 23

Detailed Solution for Practice Test: Wrong Number Series - Question 1


Therefore, wrong no. is 33

Practice Test: Wrong Number Series - Question 2

Wrong Number Series: 9, 5, 6, 10.5, 23, 90, 183

Detailed Solution for Practice Test: Wrong Number Series - Question 2

The solution is :
9 * .5 + .5 = 5
5 * 1 + 1 = 6
6 * 1.5 + 1.5 = 10.5
10.5 * 2 + 2 = 23
23 * 2.5 + 2.5 = 60 ≠ 90
60 * 3 + 3 = 183
Therefore, wrong no. is 90

Practice Test: Wrong Number Series - Question 3

Wrong Number Series: 318, 168, 78, 38, 18, 8, 3

Detailed Solution for Practice Test: Wrong Number Series - Question 3

The solution is :
8/2 – 1 = 3
18/2 - 1 = 8
38/2 – 1 = 18
78/2 – 1 = 38
168/2 – 1 = 83 ≠ 78
318/2 -1 = 158  ≠ 168
Therefore, wrong no. is 168

Practice Test: Wrong Number Series - Question 4

Wrong Number Series: 3, 8, 18, 38, 80, 158, 318

Detailed Solution for Practice Test: Wrong Number Series - Question 4

The solution is:
3 * 2 + 2 = 8 
8 * 2 + 2 = 18
18 * 2 + 2 = 38
38 * 2 + 2 = 78 ≠ 80
78 * 2 + 2 = 158
158 * 2 + 2 = 318
Therefore, wrong no. is 80

Practice Test: Wrong Number Series - Question 5

One term in the given number series is wrong. Find out the wrong term.
 120, 143, 168, 195, 226, 255

Detailed Solution for Practice Test: Wrong Number Series - Question 5

(11)2 – 1 = 120
(12)2 – 1 = 143
(13)2 – 1 = 168
(14)2 – 1 = 195
(15)2 – 1 = 224 ≠ 226
(16)2 – 1 = 255

Practice Test: Wrong Number Series - Question 6

Wrong Number Series: 32, 39, 65, 128, 253, 467

Detailed Solution for Practice Test: Wrong Number Series - Question 6


Therefore, wrong no. is 253

Practice Test: Wrong Number Series - Question 7

Wrong Number Series: 33, 39, 56, 85, 127, 185, 254

Detailed Solution for Practice Test: Wrong Number Series - Question 7


Therefore, it must be 42+14 = 56   i.e.
127 + 56 = 183
56 + 15 = 71  i.e. 183 + 71 = 254
Hence, wrong no. is 185

Practice Test: Wrong Number Series - Question 8

Wrong Number Series: 7, 9, 21, 67, 275, 1371, 8233

Detailed Solution for Practice Test: Wrong Number Series - Question 8

The solution is :
7 * 1 + 2 = 9 
9 * 2 + 3 = 21 
21 * 3 + 4 = 67
67 * 4 + 5 = 273  ≠  275
273 * 5 + 6 = 1371
1371 * 6 + 7 = 8233
Therefore, wrong no. is 275

Practice Test: Wrong Number Series - Question 9

Wrong Number Series: 3, 6, 15, 45, 157, 630, 2835

Detailed Solution for Practice Test: Wrong Number Series - Question 9

The solution is :
3 * 2 = 6 
6 * 2.5 = 15
15 * 3 = 45
45 * 3.5 = 157.5 ≠ 157
157.5 * 4 = 630
630 * 4.5 = 2835
Therefore, wrong no. is 157

Practice Test: Wrong Number Series - Question 10

Wrong Number Series: 5, 23, 43, 66, 94, 131

Detailed Solution for Practice Test: Wrong Number Series - Question 10


Because, difference of the difference is prime numbers in increasing order therefore, wrong no. is 131

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