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Class 10 Exam  >  Class 10 Tests  >  Olympiad Test: Series Completion - Class 10 MCQ

Olympiad Test: Series Completion - Class 10 MCQ


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15 Questions MCQ Test - Olympiad Test: Series Completion

Olympiad Test: Series Completion for Class 10 2025 is part of Class 10 preparation. The Olympiad Test: Series Completion questions and answers have been prepared according to the Class 10 exam syllabus.The Olympiad Test: Series Completion MCQs are made for Class 10 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Series Completion below.
Solutions of Olympiad Test: Series Completion questions in English are available as part of our course for Class 10 & Olympiad Test: Series Completion solutions in Hindi for Class 10 course. Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free. Attempt Olympiad Test: Series Completion | 15 questions in 20 minutes | Mock test for Class 10 preparation | Free important questions MCQ to study for Class 10 Exam | Download free PDF with solutions
Olympiad Test: Series Completion - Question 1
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There is a series of numbers which follow some definite order. Find the missing term and complete the series.

3, 4, 5, 5, 12, 13, 7, 24, 25, 9, ?, 41

Detailed Solution for Olympiad Test: Series Completion - Question 1

The given numbers are in the set of three numbers which are Pythagorean triplet. 
32 + 42 = 52, 52 + 122 = 132,
72 + 242 = 252,  92 + 402 = 412.

Olympiad Test: Series Completion - Question 2
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There is a series of numbers which follow some definite order. Find the missing term and complete the series.

10, 17, 26, 37, 50, …. ? 

Detailed Solution for Olympiad Test: Series Completion - Question 2

The pattern of the given series is
32 + 1 = 10;  42 + 1 = 17;  52 + 1 = 26;
62 + 1 = 37;  72 + 1 = 50;
∴ 82 + 1 = 65.

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Olympiad Test: Series Completion - Question 3
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There is a series of numbers which follow some definite order. Find the missing term and complete the series.

2, 4, 4, 8, 16, 16, 256, ?

Detailed Solution for Olympiad Test: Series Completion - Question 3


∴ ? = 32

Olympiad Test: Series Completion - Question 4
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There is a series of numbers which follow some definite order. Find the missing term and complete the series.

1, 5, 7, 14, 18, 20, 40, 44, 46, ? 
Detailed Solution for Olympiad Test: Series Completion - Question 4

1 + 4 = 5; 5 + 2 = 7; 7 × 2 = 14
14 + 4  = 18; 18 + 2 = 20; 20 × 2 = 40
40 + 4  = 44; 44 + 2 = 46; 46 × 2 = 92 
∴ ? = 92

Olympiad Test: Series Completion - Question 5
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There is a series of numbers which follow some definite order. Find the missing term and complete the series.

5, 12, 7, 15, 8, 18, 10, ? 
Detailed Solution for Olympiad Test: Series Completion - Question 5

Second, fourth, sixth terms are multiplies of 3 as, 12, 15, 18 and so on the eight-term will be 21.

Olympiad Test: Series Completion - Question 6
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There is a series of numbers which follow some definite order. Find the missing term and complete the series.

325, 259, 204, 160, 127, 105, ? 
Detailed Solution for Olympiad Test: Series Completion - Question 6

325 – 66 = 259; 259 – 55 = 204; 
204 – 44 = 160; 160 – 33 = 127;
127 – 22 = 105; 105 – 11 = 94;
∴ ? = 94

Olympiad Test: Series Completion - Question 7
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There is a series of numbers which follow some definite order. Find the missing term and complete the series.

0, 2, 3, 5, 8, 10, 15, 17, 24, 26, ?
Detailed Solution for Olympiad Test: Series Completion - Question 7


∴ ? = 35

Olympiad Test: Series Completion - Question 8
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There is a series of numbers which follow some definite order. Find the missing term and complete the series.

120, 99, 80, 63, 48, ? 
Detailed Solution for Olympiad Test: Series Completion - Question 8

Here
120 – 21 = 99;  99 – 19 = 80; 80 – 17 = 63; 
63 – 15 = 48; 48 – 13 = 35;
∴ ? = 35

Olympiad Test: Series Completion - Question 9
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There is a series of numbers which follow some definite order. Find the missing term and complete the series.

1, 1, 4, 8, 9, 27, 16, ?
Detailed Solution for Olympiad Test: Series Completion - Question 9


∴ ? = 64

Olympiad Test: Series Completion - Question 10
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There is a series of numbers which follow some definite order. Find the missing term and complete the series.

10, 14, 26, 42, 70, ? 
Detailed Solution for Olympiad Test: Series Completion - Question 10

10 + 14 + 2 = 26; 14 + 26 + 2 = 42; 
26 + 42 + 2 = 70; 42 + 70 + 2 = 114;
∴ ? = 114

Olympiad Test: Series Completion - Question 11
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In each of the following questions, one term in the number series is wrong. Find out the wrong term.

196, 169, 144, 121, 101.
Detailed Solution for Olympiad Test: Series Completion - Question 11

196 = 142; 169 = 132; 144 = 122;
121 = 112; 102 = 100; 
∴ 101 is wrong term.

Olympiad Test: Series Completion - Question 12
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In each of the following questions, one term in the number series is wrong. Find out the wrong term.

2, 6, 24, 96, 285, 568, 567 
Detailed Solution for Olympiad Test: Series Completion - Question 12

2 × 6 – 6 = 6; 6 × 5 – 5 = 25;
25 × 4 – 4 = 96; 96 × 3 – 3 = 285;
285 × 2 – 2 = 568; 568 × 1 – 1 = 567;
∴ 24 is odd.

Olympiad Test: Series Completion - Question 13
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In each of the following questions, one term in the number series is wrong. Find out the wrong term.

93, 309, 434, 498, 521, 533
Detailed Solution for Olympiad Test: Series Completion - Question 13

93 + 63 = 309;  309 + 53 = 434;
434 + 43 = 498;  498 + 32 = 525;
525 + 23 = 533;
∴ 521 is wrong term.

Olympiad Test: Series Completion - Question 14
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In each of the following questions, one term in the number series is wrong. Find out the wrong term.

3, 2, 8, 9, 13, 22, 18, 32, 23, 42
Detailed Solution for Olympiad Test: Series Completion - Question 14


2 + 10 = 12
∴ 9 is the wrong term. 

Olympiad Test: Series Completion - Question 15
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In each of the following questions, one term in the number series is wrong. Find out the wrong term.

8, 13, 21, 32, 47, 63, 83
Detailed Solution for Olympiad Test: Series Completion - Question 15

8 + 5 = 13; 13 + 8 = 21;
21 + 11 = 32; 32 + 14 = 46;
46 + 17 = 63; 63 + 20 = 83;
∴ 47 is odd.

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