Explore Exams
Login Signup
Sign in Open App
CAT Exam  >  CAT Test  >  Level-wise Tests  >  Test Level 2: Number Series - CAT MCQ

Test Level 2: Number Series CAT MCQs & solutions - Free


MCQ Practice Test & Solutions: Test Level 2: Number Series (15 Questions)

You can prepare effectively for CAT Level-wise Tests for CAT with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test Level 2: Number Series". These 15 questions have been designed by the experts with the latest curriculum of CAT 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 30 minutes
  • - Number of Questions: 15

Sign up on EduRev for free to attempt this test and track your preparation progress.

Test Level 2: Number Series - Question 1
Save

Directions: Find the missing number in the following series.

210, 21, 189, ?, 170.1, 17.01

Detailed Solution: Question 1

The given series follows a pattern as given below:
210 ÷ 10 = 21
21 × 9 = 189
189 ÷ 10 = 18.9
18.9 × 9 = 170.1
170.1 ÷ 10 = 17.01
So, the missing number is 18.9.

Test Level 2: Number Series - Question 2
Save

Find the missing term in the following series:

10, 11, 24, 75, 304, ?

Detailed Solution: Question 2

First term – 10
Second term – 10 × 1 + 1 = 11
Third term – 11 × 2 + 2 = 24
Fourth term – 24 × 3 + 3 = 75
Fourth term – 75 × 4 + 4 = 304
Missing term – 304 × 5 + 5 = 1525

Clear all your doubts with EduRev
Test Level 2: Number Series - Question 3
Save

Directions: Find the wrong term in the following number series.

22, 21, 41, 128, 513, 2564

Detailed Solution: Question 3

The given series follows the pattern as shown below:

22 × 1 - 1 = 21

21 × 2 + 1 = 43

43 × 3 - 1 = 128

128 × 4 + 1 = 513

513 × 5 - 1 = 2564

Therefore, 41 is the wrong term in the series.

Test Level 2: Number Series - Question 4
Save

Directions: Find the wrong term in the following series.

11, 45, 215, 1165, 5315, 26565

Detailed Solution: Question 4

The given series follows a pattern as shown below.
11 x 5 - 10 = 55 - 10 = 45
45 x 5 - 10 = 225 - 10 = 215
215 x 5 - 10 = 1075 - 10 = 1065
1065 x 5 - 10 = 5325 - 10 = 5315
5315 x 5 - 10 = 26575 - 10 = 26565
Therefore, 1165 is the wrong term in the given series.

Test Level 2: Number Series - Question 5
Save

Directions: Find the wrong term in the following number series.

54, 68, 85, 106, 134, 164

Detailed Solution: Question 5

The given series follows the pattern as shown below.


Therefore, 134 is the wrong term in the given series.

Test Level 2: Number Series - Question 6
Save

Directions: Find the wrong term in the following series.

8, 15, 41, 169, 841, 5041, 35281

Detailed Solution: Question 6

The given series follows a pattern as shown below.
8 x 2 - 1 = 16 - 1 = 15
15 x 3 - 2 = 45 - 2 = 43
43 x 4 - 3 = 172 - 3 = 169
169 x 5 - 4 = 845 - 4 = 841
841 x 6 - 5 = 5046 - 5 = 5041
5041 x 7 - 6 = 35287 - 6 = 35281
So, the wrong term in the given series is 41.

Test Level 2: Number Series - Question 7
Save

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

1, 4, 27, 16, 125, 36, ?

Detailed Solution: Question 7

The pattern is as follows.
13 = 1 
22 = 4
33 = 27
42 = 16
53 = 125
62 = 36
73 = 343 

Test Level 2: Number Series - Question 8
Save

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

4, 8, 6, 18, 10, 50, ?, 98

Detailed Solution: Question 8

The given series is an alternate series. Odd series is double of consecutive prime numbers.
i.e.
2 × 2 = 4
3 × 2 = 6
5 × 2 = 10
7 × 2 = 14

Even series is as:

42/2 = 8

62/2 = 18

102/2 = 50

142/2 = 98

Test Level 2: Number Series - Question 9
Save

Directions: Select the number that will come in place of the question mark (?) in the following series.

18, 23, 38, 83, 218, ?

Detailed Solution: Question 9

Test Level 2: Number Series - Question 10
Save

Find the missing term in the following series:

2, 5, 14, 41, 122, ?

Detailed Solution: Question 10

Here, the pattern is addition of powers of 3 to the previous terms to get the next term.
First term – 2
Second term – 2 + 3 = 5
Third term – 5 + 9 = 14
Fourth term – 14 + 27 = 41
Fifth term – 41 + 81 = 122 
Missing term – 122 + 243 = 365

Test Level 2: Number Series - Question 11
Save

Find the missing term in the following series:

15, 19, 28, 44, 69, ?

Detailed Solution: Question 11

First term – 15
Second term – 15 + 22 = 19
Third term – 19 + 32 = 28
Fourth term – 28 + 42 = 44
Fifth term – 44 + 52 = 69
Missing term – 69 + 62 = 105

Test Level 2: Number Series - Question 12
Save

Find the missing term in the following series.

6, 17, 39, 83, 171, ?

Detailed Solution: Question 12

First term – 6
Second term – 6 × 2 + 5 = 17
Third term – 17 × 2 + 5 = 39
Fourth term – 39 × 2 + 5 = 83
Fifth term – 83 × 2 + 5 = 171
Missing term – 171 × 2 + 5 = 347

Test Level 2: Number Series - Question 13
Save

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

7, 60, 325, 1640, 8275

Detailed Solution: Question 13

Series is as follows.
(7 + 5) × 5 = 60,
(60 + 5) × 5 = 325,
(325 + 5) × 5 = 1650,
(1650 + 5) × 5 = 8275
Therefore, option (3) is the correct answer.

Test Level 2: Number Series - Question 14
Save

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

323, 221, 143, 79, 35, 15

Detailed Solution: Question 14

Series is as follows.
19 × 17,
17 × 13,
13 × 11,
11 × 7,
7 × 5,
5 × 3
Multiplication of prime numbers is done in decreasing order.
Therefore, option (1) is the correct answer.

Test Level 2: Number Series - Question 15
Save

Directions: Find the wrong term in the following series.

7, 28, 63, 124, 215, 342, 511

Detailed Solution: Question 15

23 - 1 = 7
33 - 1 = 26 (Not 28)
43 - 1 = 63
53 - 1 = 124
63 - 1 = 215
73 - 1 = 342
83 - 1 = 511
Hence, 28 is a wrong number. The correct number is 26.

5 docs|246 tests
Join Course
Information about Test Level 2: Number Series Page
In this test you can find the Exam questions for Test Level 2: Number Series solved & explained in the simplest way possible. Besides giving Questions and answers for Test Level 2: Number Series, EduRev gives you an ample number of Online tests for practice
Download as PDF
;

About this CAT Practice Test

This test contains 15 MCQs on Test Level 2: Number Series with detailed solutions for each question. It is part of the Level-wise Tests for CAT course on EduRev, designed to align with the current CAT syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

Explore more CAT Study Resources

If you found this Test Level 2: Number Series MCQ Test helpful, you can further enhance your CAT preparation with in-depth courses on EduRev, for all the subjects and topics available in Level-wise Tests for CAT course. The course offers:
  • Video Lectures: covering all the topics of Level-wise Tests for CAT
  • Notes for Revision: offering revision notes, important questions, summaries, flashcards, cheatsheets & more for CAT preparation
  • MCQ Test: variety of questions as per the pattern of CAT exam
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup