Quantitative Aptitude: Number Series Set 120

Directions (1-10): Find the wrong term in the following series each of which follows some particular pattern:

1. 34.., 43…, 70.., 131.., 394
   34
   43
   70
   131
   394
   Option D
   34+3^2=43
   43+3^3=70
   70+3^4=151 (not 131)
   151+3^5=394
   
   
    



2. 33…, 37.., 51..,71.., 109
   33
   37
   51
   71
   109
   Option E
   33+4*1= 37
   37+4*3=51
   51+4*5=71
   71+4*7=99 (not 109)
   
   
    



3. 99.., 36.., 14.., 8.., 5.66
   99
   36
   14
   8
   5.66
   Option C
   (99/3) +3=36
   (36/3)+3=15 (not 14)
   (15/3)+3= 8
   (8/3)+3=5.66
   
   
    



4. 30.., 54.., 74.., 110.., 150
   30
   54
   74
   110
   150
   Option C
   30 +8=38
   38+16=54
   54+24=78 (not 74)
   78+32=110
   110+40=150
   
   
    



5. 234…, 240.., 248..,262.. , 288
   234
   240
   248
   262
   288
   Option E
   234 +2+4=240
   240+3 + 5=248
   248+6+8=262
   262+7+9=278 (not 288)
   
   
    



6. 70.., 73.., 79.., 113.., 176
   70
   73
   79
   113
   176
   Option C
   70+ 1*3 =73
   73 + 3*5=78 (not 79)
   78 + 5*7 =113
   113+7*9=176
   
   
    



7. 1563…, 1557.., 1545.. , 1527.., 1500
   1563
   1557
   1545
   1527
   1500
   Option E
   1563 – 6=1557
   1557-12=1545
   1545-18=1527
   1527-24=1503
   
   
    



8. 235.., 240.., 271…, 321…, 443
   235
   240
   271
   321
   443
   Option B
   235 + 32 +1=245 (not 240)
   245 + 52 +1=271
   271 +7 2 +1=321
   321+ 112 +1=443
   
   
    



9. 4450…, 4353…, 4259…, 4168…, 4070
   4450
   4353
   4259
   4168
   4070
   Option E
   4450 – 102+3=4353
   4353 – 102+6=4259
   4259 – 102+9=4168
   4168 – 102+12=4080 (not 4070)
   
   
    



10. 50.., 170.., 600.., 120.., 20..,140
    50
    170
    600
    120
    20
    Option B
    50 * 3= 150 (not 170)
    150* 4=600
    600/5=120
    120/6=20
    20*7=140