Number series questions are a common type of logical reasoning problem found in various competitive exams. These number series Practice questions involve a sequence of numbers that follow a specific pattern or rule. The goal is to identify the missing number in the series based on the established pattern.

## Number Series Practice Questions

**Basic Patterns**

**Arithmetic Progression (AP):**In an AP, the difference between consecutive terms remains constant.- Example: 2, 5, 8, 11, ?

**Geometric Progression (GP):**In a GP, the ratio between consecutive terms remains constant.- Example: 2, 4, 8, 16, ?

**Squares:**The series consists of the squares of consecutive natural numbers.- Example: 1, 4, 9, 16, ?

**Cubes:**The series consists of the cubes of consecutive natural numbers.- Example: 1, 8, 27, 64, ?

**Factorials:**The series consists of the factorials of consecutive natural numbers.- Example: 1, 2, 6, 24, ?

**Find the missing number in series Practice Questions**

**Level 1**

- 1, 4, 9, 16, ?
- 2, 5, 10, 17, ?
- 1, 3, 6, 10, ?
- 2, 6, 12, 20, ?
- 1, 4, 9, 16, 25, ?

**Level 2**

- 1, 2, 4, 7, 11, ?
- 1, 3, 7, 15, 31, ?
- 2, 5, 10, 17, 26, ?
- 1, 4, 10, 20, 35, ?
- 1, 2, 6, 24, 120, ?

**Level 3**

- 1, 4, 9, 16, 25, 36, 49, ?
- 2, 5, 10, 17, 26, 37, 50, ?
- 1, 3, 6, 10, 15, 21, 28, ?
- 2, 6, 12, 20, 30, 42, 56, ?
- 1, 4, 9, 16, 25, 36, 49, 64, 81, ?

**Level 4**

Multiple Choice Questions:

Find the missing number in the following

series out of four options.

- 1, 2, 5, 7, 11,
**__**,17

a. 12 b. 13

c. 14 d. 15 - 1, 8, 27,
*__*,125

a. 37 b. 47

c. 54 d. 64 - 6, 12, 21, 33,
*__*

a. 38 b. 40

c. 45 d. 48 - 2, 20,
*__*,110, 182

a. 56 b. 72

c. 90 d. 96 - 81, 9, 64,
*__*,49, 7

a. 8 b. 9

c. 10 d. 11 - 15, 20, 30,
**_**,65

a. 35 b. 40

c. 45 d. 50 - 18, 30, 48, 72, 96,
**__**

a. 106 b. 115

c. 120 d. 96 - 12, 32, 72, 152,
,632*_*

a. 515 b. 613

c. 815 d. 312 - 1, 2, 3, 5, 7,
**__**,13

a. 8 b. 9

c. 10 d. 11 - 3, 8, 22, 63, 185,
**_**

a. 285 b. 295

c. 310 d. 500

Comment all student answers

**Tips for Solving Number Series Questions**

**Identify the pattern:**Look for differences, ratios, or other relationships between consecutive terms.**Check for common patterns:**Familiarize yourself with basic patterns like AP, GP, squares, cubes, and factorials.**Consider combinations:**Sometimes, the pattern involves a combination of different patterns.**Use trial and error:**If you can’t immediately identify the pattern, try different possibilities.**Practice regularly:**The more you practice, the better you will become at recognizing patterns and solving number series questions.

**Answers**

**Level 1**

- 25
- 26
- 15
- 28
- 36

**Level 2**

- 16
- 63
- 37
- 56
- 720

**Level 3**

- 64
- 65
- 36
- 72
- 100

**Note:** This is just a sample of number series questions. There are many other types of patterns and combinations that can be encountered in competitive exams. Consistent practice is key to mastering this type of question.