Oddman Out and Series
Posted by
Ravi Kumar at Tuesday, August 30, 2011
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Introduction:
In any type of problems,a set of numbers is given in such a way
that each one except one satisfies a particular definite
property.The one which does not satisfy that characteristic is
to be taken out. Some important properties of numbers are
given below :
1.Prime Number Series
Example:
2,3,5,7,11,..............
2.Even Number Series
Example:
2,4,6,8,10,12,...........
3.Odd Number Series:
Example:
1,3,5,7,9,11,...........
4.Perfect Squares:
Example:
1,4,9,16,25,............
5.Perfect Cubes:
Example:
1,8,27,64,125,.................
6.Multiples of Number Series:
Example:
3,6,9,12,15,..............are multiples of 3
7.Numbers in Arthimetic Progression(A.P):
Example:
13,11,9,7................
8.Numbers in G.P:
Example:
48,12,3,.....
Some More Properties:
1. If any series starts with 0,3,.....,generally the relation
will be (n21).
2. If any series starts with 0,2,.....,generally the relation
will be (n2n).
3. If any series starts with 0,6,.....,generally the relation
will be (n3n).
4. If 36 is found in the series then the series will be in n2
relation.
5. If 35 is found in the series then the series will be in
n21 relation.
6. If 37 is found in the series then the series will be in n2+1
relation.
7. If 125 is found in the series then the series will be in n3
relation.
8. If 124 is found in the series then the series will be in n31
relation.
9. If 126 is found in the series then the series will be in n3+1
relation.
10. If 20,30 found in the series then the series will be in n2n
relation.
11. If 60,120,210,........... is found as series then the series
will be in n3n relation.
12. If 222,............ is found then relation is n3+n
13. If 21,31,.......... is series then the relation is n2n+1.
14. If 19,29,.......... is series then the relation is n2n1.
15. If series starts with 0,3,............ the series will be on
n21 relation.