Number Series

Learn Number Series Easily with Examples

What is Number Series?

Number series is a sequence of numbers that follow a fixed pattern.

How to Solve Number Series Easily

• Look at the difference between numbers (+ or −).
• If not working, check multiplication or division.
• See if numbers repeat in a pattern.
• Always move from left to right.

Types of Number Series

Addition Number Series

In this type of series, a fixed number or pattern is added each time to get the next number.

Subtraction Number Series

In this type of series, a fixed number or pattern is subtracted each time to get the next number.

Multiplication Number Series

In this type of series, each number is multiplied by a fixed number or pattern to get the next number.

Division Number Series

In this type of series, each number is divided by a fixed number or pattern to get the next number.

Square Number Series

All numbers are perfect squares like 1, 4, 9, 16, etc.

Cube Number Series

All numbers are perfect cubes like 1, 8, 27, 64, etc.

Fibonacci Number Series

Each number is found by adding the previous two numbers.

Alternating Number Series

Two or more different patterns are used one after another.

Mixed Operator Number Series

Different operations like addition, subtraction, multiplication, or division are used together.

Arranging Number Series

Numbers are first rearranged as instructed, then the answer is found.

Examples

1. Adding a Number

Series: 2, 4, 6, 8, ?

Explanation: Each number increases by +2. Next number = 10

2. Subtracting a Number

Series: 20, 18, 16, 14, ?

Explanation: Each number decreases by −2. Next number = 12

3. Multiplying a Number

Series: 3, 6, 12, 24, ?

Explanation: Each number is multiplied by 2. Next number = 48

4. Dividing a Number

Series: 100, 50, 25, ?

Explanation: Each number is divided by 2. Next number = 12.5

5. Square Numbers

Series: 100, 81, 64, 49, ?

Explanation: Each number is a square of its position minus 1. Next number = 36

6. Cube Numbers

Series: 1, 8, 27, 64, ?

Explanation: Each number is a perfect cube. Next number = 125