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CBSE Class 7  >  Class 7 Test  >  Mathematics Olympiad   >  Olympiad Test: Number Series - 1 - Class 7 MCQ

Olympiad Test: Number Series - 1 - Free MCQ with solutions Class 7 Mathematics


MCQ Practice Test & Solutions: Olympiad Test: Number Series - 1 (10 Questions)

You can prepare effectively for Class 7 Mathematics Olympiad Class 7 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Olympiad Test: Number Series - 1". These 10 questions have been designed by the experts with the latest curriculum of Class 7 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 20 minutes
  • - Number of Questions: 10

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Olympiad Test: Number Series - 1 - Question 1
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Direction: In each of the following questions, a number series is given with one missing term. Choose correct alternative that will continue the same pattern and fill in the blank spaces.
1000, 200, 40, __

Detailed Solution: Question 1

This is a simple division series. Each number is divided by 5.

Olympiad Test: Number Series - 1 - Question 2
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Direction: In each of the following questions, a number series is given with one missing term. Choose correct alternative that will continue the same pattern and fill in the blank spaces.
5.2, 4.8, 4.4, 4, __ 

Detailed Solution: Question 2

In this simple subtraction series, each number decreases by 0.4.

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Olympiad Test: Number Series - 1 - Question 3
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Direction: In each of the following questions, a number series is given with one missing term. Choose correct alternative that will continue the same pattern and fill in the blank spaces.
2, 6, 18, 54, __ 

Detailed Solution: Question 3

This is a simple multiplication series. Each number is 3 times more than the previous number.

Olympiad Test: Number Series - 1 - Question 4
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Direction: In each of the following questions, a number series is given with one missing term. Choose correct alternative that will continue the same pattern and fill in the blank spaces.
80, 10, 70, 15, 60, __ 

Detailed Solution: Question 4

This is an alternating addition and subtraction series. In the first pattern, 10 is subtracted from each number to arrive at the next. In the second, 5 is added to each number to arrive at the next.

Olympiad Test: Number Series - 1 - Question 5
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Direction: In each of the following questions, a number series is given with one missing term. Choose correct alternative that will continue the same pattern and fill in the blank spaces.
8, 43, 11, 41, __, 39, 17

Detailed Solution: Question 5

Let's analyze the given number series:
8, 43, 11, 41, __, 39, 17

Looking at the pattern, we see that the numbers alternate between two sequences:

  • Odd-positioned terms: 8, 11, __, 17 (positions 1, 3, 5, 7)
  • Even-positioned terms: 43, 41, 39 (positions 2, 4, 6)

For the odd-positioned terms, we have:

  • 8 → 11 → __ → 17
  • The difference between 8 and 11 is +3, and the difference between 11 and 17 is +6.
  • So, it seems the difference is increasing by 3 each time, so the missing term in the odd sequence is 14 (11 + 3).

For the even-positioned terms, we have:

  • 43 → 41 → 39
  • The difference between each term is -2.

Thus, the missing term in the sequence is 14.

So, the correct answer is b) 14.

Olympiad Test: Number Series - 1 - Question 6
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Direction: In each of the following questions, a number series is given with one missing term. Choose correct alternative that will continue the same pattern and fill in the blank spaces.
70, 71, 76, __, 81, 86, 70, 91

Detailed Solution: Question 6

In this series, 5 is added to the previous number; the number 70 is inserted as every third number.

Olympiad Test: Number Series - 1 - Question 7
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Direction: In each of the following questions, a number series is given with one missing term. Choose correct alternative that will continue the same pattern and fill in the blank spaces.
V, VIII, XI, XIV, __, XX, 

Detailed Solution: Question 7

This is a simple addition series; each number is 3 more than the previous number.

Olympiad Test: Number Series - 1 - Question 8
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Direction: In each of the following questions, a number series is given with one missing term. Choose correct alternative that will continue the same pattern and fill in the blank spaces.
U32, V29, __, X23, Y20 

Detailed Solution: Question 8

In this series, the letters progress by 1; the numbers decrease by 3.

Olympiad Test: Number Series - 1 - Question 9
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Direction: In each of the following questions, a number series is given with one missing term. Choose correct alternative that will continue the same pattern and fill in the blank spaces.
0.15, 0.3, ____, 1.2, 2.4 

Detailed Solution: Question 9

This is a simple multiplication series. Each number is 2 times greater than the previous number.

Olympiad Test: Number Series - 1 - Question 10
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Direction: In each of the following questions, a number series is given with one missing term. Choose correct alternative that will continue the same pattern and fill in the blank spaces.
XXIV, XX, __, XII, VIII

Detailed Solution: Question 10

This is a simple subtraction series; each number is 4 less than the previous number.

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About this Class 7 Practice Test

This test contains 10 MCQs on Olympiad Test: Number Series - 1 with detailed solutions for each question. It is part of the Mathematics Olympiad Class 7 course on EduRev, designed to align with the current Class 7 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.

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If you found this Olympiad Test: Number Series - 1 MCQ Test helpful, you can further enhance your Class 7 preparation with in-depth courses on EduRev, for all the subjects and topics available in Mathematics Olympiad Class 7 course. The course offers:
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