# Number Series Reasoning

## Number Series Reasoning Problem

Number series aptitude questions present you with mathematical sequences that follow a logical rule, based on elementary arithmetic. Number series is a sequence of numbers which is framed, using a particular system/rule, in which the numbers are not in a specific order. All we have to do is to find out the system/rule that a particular series is following and finding the number using that system/rule.

Number Series Practice Questions we will see various questions on concepts like Perfect Square Series, Perfect Cube Series,Geometric Series etc. To better understand we divide all number series problem in following categories;

• Series with a constant difference
• Series with an increasing difference
• Series with a decreasing difference
• Squares/ Cubes series
• Combination of different operations
• Miscellaneous

### Series with a constant difference

In this kind of number series, any 2 consecutive numbers have the same difference between them. For example : 0 , 3 , 6 , 9 , ?

### Series with an increasing difference

In this type of series, the difference between two consecutive terms keep on increasing as we move forward in a series. Let us try to use this theory in a question.1,2,4,7,11,16,? We can clearly observe that the series is increasing with the difference : +1, +2, +3 ,+4 , +5.