Quantitative Aptitude: Number Series Set 109

Directions(1-5): Find the wrong number of the following series.

1. 244,242,220,200,144,54
   244
   242
   220
   200
   144
   Option C
   -(1*2)
   -(3*4)
   -(5*6)
   -(7*8)
   -(9*10)
   230 should be in place of 220.
   
   
    



2. 122,213,340,506,726,997
   122
   506
   213
   340
   997
   Option B
   5^3-3
   6^3-3
   7^3-3
   8^3-3
   9^3-3
   10^3-3
   509 should be in place of 506.
   
   
    



3. 50,86,150,250,390,590
   86
   50
   150
   390
   250
   Option D
   +6^2
   +8^2
   +10^2
   +12^2
   +14^2
   394 should be in place of 390.
   
   
    



4. 104,127,173,246,334,449
   127
   104
   173
   334
   246
   Option E
   +23, +46, +69, +92, +115
   242 should be in place of 246.
   
   
    



5. 60,90,180,450,1350,4625
   180
   90
   60
   1350
   4625
   Option E
   *1.5,*2,*2.5,*3,*3.5
   4725 should be in place of 4625.
   
   
    
Directions(6-10): Find the missing term of the following number series.


6. 6,13,34,69,?,181
   118
   100
   98
   90
   92
   Option A
   +7*1
   +7*3
   +7*5
   +7*7
   +7*9
   ? = 118
   
   
   
    



7. 13,22,6,31,?,44
   -2
   1.5
   -5
   1
   2
   Option C
   +3^2,-4^2,+5^2,-6^2,+7^2
   ? = -5
   
   
    



8. 25,35,60,95,155,?
   250
   200
   190
   188
   170
   Option A
   Add the numbers and get a next number
   ? = 250
   
   
    



9. 18,37,60,?,120,157
   80
   77
   71
   89
   67
   Option D
   +19,+23,+29,+31,+37
   ? = 89
   
   
    



10. 105,107,101,125,5,?
    717
    672
    650
    625
    725
    Option E
    +2!,-3!,+4!,-5!,+6!
    ? = 725