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Test Level 1: Number Series - CAT MCQ


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10 Questions MCQ Test Level-wise Tests for CAT - Test Level 1: Number Series

Test Level 1: Number Series for CAT 2024 is part of Level-wise Tests for CAT preparation. The Test Level 1: Number Series questions and answers have been prepared according to the CAT exam syllabus.The Test Level 1: Number Series MCQs are made for CAT 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test Level 1: Number Series below.
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Test Level 1: Number Series - Question 1

Directions: A number series is given below, in which only one number is wrong. Find out the wrong number.

6, 7, 9, 13, 26, 37, 69

Detailed Solution for Test Level 1: Number Series - Question 1

The series follows the pattern as given below:
+1, +2, +4, +8, +16, +32
13 + 8 = 21; 
21 + 16 = 37;
So, 26 is the wrong number.
The number should be 21 in place of 26. 

Test Level 1: Number Series - Question 2

Directions: A number series is given below, in which only one number is wrong. Find out the wrong number.

4, 5, 13, 40, 105, 229, 445

Detailed Solution for Test Level 1: Number Series - Question 2

The pattern is:
4 + 13 = 5
5 + 23 = 13
13 + 33 = 40
40 + 43 = 104 ≠ 105
104 + 53 = 229
229 + 63 = 445

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Test Level 1: Number Series - Question 3

Directions: A number series is given below, in which only one number is wrong. Find out the wrong number.

295300 42185 7030 1405 352 115 55

Detailed Solution for Test Level 1: Number Series - Question 3

Here, the given series is as follows.
55 = 50 x 1 +5
115 = 55 x 2 + 5
350 = 115 x 3 + 5 ≠ 352
1405 = 350 x 4 + 5
7030 = 1450 x 5 + 5
42185 = 7030 x 6 + 5
295300 = 42185 x 7 + 5 

Therefore, this is the correct answer.

Test Level 1: Number Series - Question 4

Directions: Find the wrong term in the following series.

2, 5, 13, 28, 55, 87, 135

Detailed Solution for Test Level 1: Number Series - Question 4

 The given series follows a pattern as shown below.
2 + 22 - 1 = 2 + 4 - 1 = 5
5 + 32 - 1 = 5 + 9 - 1 = 13
13 + 42 - 1 = 13 + 16 - 1 = 28
28 + 52 - 1 = 28 + 25 - 1 = 52
52 + 62 - 1 = 52 + 36 - 1 = 87
87 + 72 - 1 = 87 + 49 - 1 = 135
Therefore, 55 is the wrong term in the series.

Test Level 1: Number Series - Question 5

Directions: Find the odd one out number in the series.

42, 56, 72, 90, 111, 132, 156

Detailed Solution for Test Level 1: Number Series - Question 5

 The series is as follows.
7 × 6 = 42
8 × 7 = 56
9 × 8 = 72
10 × 9 = 90
11 × 10 = 110
12 × 11 = 132
13 × 12 = 156
Therefore, option (4) is the correct answer.

Test Level 1: Number Series - Question 6

Directions: Find the odd one out number in the series.

125, 150, 175, 196, 225, 250

Detailed Solution for Test Level 1: Number Series - Question 6

Series is
25 × 5 = 125
25 × 6 = 150
25 × 7 = 175
25 × 8 = 200
25 × 9 = 225
25 × 10 = 250
Therefore, option (4) is the correct answer.

Test Level 1: Number Series - Question 7

Directions: Find the odd one out from the following number series.

21, 27, 47, 89, 160, 271

Detailed Solution for Test Level 1: Number Series - Question 7

 The number series is in the pattern,
21 + (2 x 3) = 27
27 + (4 x 5) = 47
47 + (6 x 7) = 89
89 + (8 x 9) = 161
161 + (10 x 11) = 271
Thus, in the given series, the number 161 should be in the place of 160.

Test Level 1: Number Series - Question 8

Directions: Find the odd one out from the following number series.

13, 28, 58, 120, 238, 478

Detailed Solution for Test Level 1: Number Series - Question 8

The number series is in the pattern,
13 x 2 + 2 = 28
28 x 2 + 2 = 58
58 x 2 + 2 = 118
118 x 2 + 2 = 238
238 x 2 + 2 = 478
Thus in the given series, the number 118 should be placed in the place of 120.

Test Level 1: Number Series - Question 9

What will come in place of the question mark (?) in the following number series? 

27, 36, 20, 45, 9, ?

Detailed Solution for Test Level 1: Number Series - Question 9

27 + (3)2 = 27 + 9 = 36
36 - (4)2 = 36 - 16 = 20
20 + (5)2 = 20 + 25 = 45
45 - (6)2 = 45 - 36 = 9
9 + (7)2 = 9 + 49 = 58 = ?

Test Level 1: Number Series - Question 10

What should come in place of the question mark (?) in the following number series?

14, 28, 20, 40, 32, 64, ?

Detailed Solution for Test Level 1: Number Series - Question 10

The pattern is as follows:
14 x 2 = 28
28 - 8 = 20
20 x 2 = 40
40 - 8 = 32
32 x 2 = 64
64 - 8 = 56

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