Number sequence (series) or Patterns
Number sequence (series) or patterns
Whole numbers, decimals and fractions can be written in a particular sequence.
A Sequence is a set of things (usually numbers) that are in order.
Examples of patterns
![](https://elimufeynman.s3.amazonaws.com/media/resources/patternexample-1.jpg)
![](https://elimufeynman.s3.amazonaws.com/media/resources/patternexample-2a.jpg)
![](https://elimufeynman.s3.amazonaws.com/media/resources/patternexample-3.jpg)
![](https://elimufeynman.s3.amazonaws.com/media/resources/patternexample-4.jpg)
![](https://elimufeynman.s3.amazonaws.com/media/resources/patternexample-5.jpg)
Methods applied in solving sequence questions
- Difference
- Sum (addition)
- Square (perfect square)
- Square root
- Cube
- Cube root
- Alternate method
- Prime numbers
See examples in the pages that follow
![](https://elimufeynman.s3.amazonaws.com/media/resources/methodapplied-1.jpg)
1, 4, 7, 10, 13, 16..............
![](https://elimufeynman.s3.amazonaws.com/media/resources/methodapplied-2.jpg)
25, 23, 21, 19, 17.......
![](https://elimufeynman.s3.amazonaws.com/media/resources/methodapplied-3.jpg)
![](https://elimufeynman.s3.amazonaws.com/media/resources/methodapplied-4.jpg)
![](https://elimufeynman.s3.amazonaws.com/media/resources/methodapplied-5.jpg)
![](https://elimufeynman.s3.amazonaws.com/media/resources/methodapplied-6.jpg)
![](https://elimufeynman.s3.amazonaws.com/media/resources/methodapplied-7.jpg)