We will get questions on numbers series based on below five methods:
1) Series based on Square or Cube: In this case we will find the difference of the numbers and we will get the answers
Ex : 31, 33, 40, 68, 131, ?
Ans :
31 + (13 + 1) = 31 + 2 = 33
33 + (23 - 1) = 33 + 7 = 40
40 + (33 + 1) = 40 + 28 = 68
68 + (43 - 1) = 68 + 63 = 131
131 + (53 + 1) = 131 + 126 = 257
Ex: 11 13 20 48 111 ?( Practice : ans :237)
2) Series based on Decimal number: If you will find any decimal number in the question . Answer will be multiply by * 0.5 or 1.5
Ex : i) 12, 6.5, 7.5, 17, 72, ?
Ans :
12x 0.5 + 0.5 = 6.5
6.5 x 1 + 1 = 7.5
7.5 x 2 + 2 = 17
17 x 4 + 4 = 72
72 x 8 + 8 = 584
Ex : 6 3.5 4.5 11 48 ? ( Practice : ans :392)
3) Completely Divisible series : If the same numbers are exist in the question. Maximum answer will follows the Divisible method.
Ex : 12 , 12 , 18 , 45 , 180 , ?
Ans :
12 /12 =1
18/12 = 1.5
45/18 = 2.5
180/45 =4
x/180 = 6
x = 180*6=1080
here you will get question like how we have written x/180 is 6
see the difference from top from 1 to 1.5 is 0.5
from 1.5 to 2.5 is 1
from 2.5 to 4 is 1.5
we need to get next difference is 2 so from 4 to 6 is 2
4) Half Pattern series : 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
Ex : 70 , 40 , 50 , 90 , 200 , ?
Ans :
(70 *0.5 )+5 = 40
(40*1 )+10 =50
(50*1.5)+15 =90
(90*2)+20 = 200
(200*2.5)+25 =525
5) Series based on Multiplication :. If any series you will find that number is suddenly increased bulk . That series is based on multiplication.
Ex : 3, 4, 10, 33, 136, ?
Ans :
x 1 + 1 = 4
4 x 2 + 2 = 10
10 x 3 + 3 = 33
33 x 4 + 4 = 136
136 x 5 + 5 = 685
Ex: Practice :
6 16 45 184 917 ?
Ans :5508
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