Number Series for SBI PO 2018

The Number Series Tricks are very important for every competitive exams. By using the below tricks you will be able to do the number series problems very easily.


Before going to problems lets understand the Five main topics of Number Series


1) Series based on Square or Cube
2) Series based on Decimal number
3)Completely Divisible  series
4) Half Pattern series
5) Series based on Multiplication


Lets take one by one

1) Series based on Square or Cube

Example: 1 , 2, 6 , 33 , 49, 174 , ?


Ans:  1 , 2   , 6  ,  33   ,   49   , 174  ,  ?

6*6 = 36

36+174=210

2) Series based on Decimal number

Example : 12 , 6.5 , 7.5 , 12.75 , 27.50 , ?


Note : If you will find any decimal number in number series . Answer will be multiply by * 0.5 or 1.5

27.50*2.5 = 68.75+2.5 =71.25  

3)Completely Divisible  series

Example:  12  , 12  ,  18  , 45  , 180  ,   ?

Note : If the same numbers are exist in the question. Maximum answer will follows the Divisible method.

180 * 6 = 1080 

4) Half Pattern series

Example: 70     ,       40     ,       50     ,   90         ,  200   ,        ?

Note : Whenever you will find the second number is near of half of first number and third number is near of second number . Then , that series is based on  Half Pattern Series.
Whenever your series is Half pattern . as per the name it is required we have to multiply with 0.5
                        

200*2.5  = 500+25= 525

5) Series based on Multiplication:

Example : 1   , 10 ,   28 ,   91 , 370 ,    ?

Note : In the above question the difference of the 91 and 370 is huge. If any series you will find that number is suddenly increased bulk . that series is based on multiplication. in this case try to solve the question from last (from right side).

370*5 = 1850+5= 1855 

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