asked in 1 FEB 2013 Bangalore IBM drive
1)3,7,10,8,4,12,0,5,5,3,2,5
2)0,1,1,2,0,5,2,2,4,2,2,4,3,7,2
3)10,12,-36,-7,-5,15,19,21
4)4,2,4,8,6,8,16
5)11.5,17.5,35.5,89.5
6)1,1,1,2,4,12,36
7)8,16,3,27,4,8,7,19,2,0,7
8)40,39,37,33,26,15
9)3,5,2,100,47,3,196,1,6,5,
10)507,169,248,62,36,12,168,42,168
11)49,7,98,16,4,48,9,3,36,23,5(here i dnt know,,it is 23 or 25 or 26)
12)8,0.5,16,4,15,0.3,50,4.5,6,0.2,30
13)115,100,86,74,65,60
14)1,3,1,2.5,5,1,4,5,4,,8,7
15)4,3,144,1.5,2,9,5,0.3,2.2
16)0,1,2,.5,2,2,2,2,4,3,2,
17)8,5,9,7,2,2.5,5,1,16,8,6,4
18)13,21,32,49,78,131...

• 18)ans
  21-13=8,11-8=3
  32-21=11,17-11=6
  49-32=17,29-17=12
  78-49=29,53-29=24
  131-78=53,x-53=48=101
  so ans is 101+131=232
  
• 11 years agoHelpfull: Yes(26) No(10)
• 7 ans:
  (8,16,3,27)(4,8,7,19)(2,0,7,x)
  8+16+3=27
  4+8+7=19
  2+0+7=9
  So, ans is 9
• 11 years agoHelpfull: Yes(15) No(0)
• 1) 3,7,10,8,4,12,0,5,5,3,2,5
  
  so 3,7,10,8
  4,12,0,5
  --------
  3.....,4....,5....6
  
  means 6 is Answer.
• 11 years agoHelpfull: Yes(13) No(11)
• 9) series is 3,5,2,100,4,7,3,196,1,6,5,144
  ans=144
  3+5+2=10=10*10=100
  so on.........
  1+6+5=12*12=144
• 11 years agoHelpfull: Yes(10) No(1)
• 16) ans is 3.5
  (0,1,2,.5),(2,2,2,2),(4,3,2,?)
  0+1=1/2=0.5
  2+2=4/2=2
  4+3=7/2=3.5(ans)
  
• 11 years agoHelpfull: Yes(9) No(0)
• 4) (4, 2, 4) (8, 6, 8) (16, x, 16)
  1st and 3rd term are same
  
  4-2=2
  8-6=2
  16-14=2
  hence ans = 14
• 11 years agoHelpfull: Yes(6) No(4)
• 4)4,2,4,8,6,8,16
  (4,2,4) (8,6,8) (16 ? ?)
  mid term = 2 ,2+2 =4 we get 1st,3rd terms
  mid=6 ,6+2=8 i.e, 8 and 8
  similary we know first term in series 16
  so mid =14 then 14+2=16
  16 is 1st and 3rd term
  correct me if i am wrong.
• 10 years agoHelpfull: Yes(6) No(0)
• 6) 1,1,1,2,4,12,36
  
  1x1=1
  1x1=1
  1x2=2
  2x2=4
  4x3=12
  2x3=36
  36x4=144
• 9 years agoHelpfull: Yes(6) No(0)
• 10) Alternative divisor of 3 and 4.
  507/3=169
  248/4=62
  36/3=12
  168/4=42
  168/3=56
• 10 years agoHelpfull: Yes(5) No(1)
• 14)ans is 9.5
  1+3+1=5,5/2=2.5
  5+1+4=10, 10/2=5
  4+8+7=19, so ans is 19/2=9.5
• 11 years agoHelpfull: Yes(4) No(0)
• 3)10,12,-36,-7,-5,15,19,21
  
  10 12 -36
  -7 -5 15
  19 21 ?
  
  in each order multiply middle no with -3
  12*-3 = -36
  -5*-3 = 15
  21*-3 = -63(ans)
• 10 years agoHelpfull: Yes(4) No(0)
• 8) 40,39,37,33,26,15
  Observe the difference of the difference
  
• 10 years agoHelpfull: Yes(4) No(0)
• as per my knowledge....answers are...
  3)-63
  4) 14
  5)251.5
  6)144
  8) -3
  10)56
  11)125
  12)1.2
  13) 60
  16) 5
  18) 232
  
• 11 years agoHelpfull: Yes(3) No(4)
• write in dis way...
  0 1 1 2 0
  5 2 2 4 2
  2 4 3 7 ?
  now see...adding 2nd and 3rd term we r getting 4th
  and thn 4th and 5th mey diffrence kya chal raha hai ...It's 2
  so
  next will be 7-2=5
  Answer = 5
• 11 years agoHelpfull: Yes(3) No(3)
• 12) ans 5
  0.5*16=8
  0.3*50=15
  0.2*30=6
  therefore remaining terms
  ---4---4.5---5
  
• 11 years agoHelpfull: Yes(3) No(0)
• 6) 1*1=1 1*1=1
  1*2=2 2*2=4
  4*3=12 12*3=36
  36*4=144
  1,1,1,2,4,12,36,144
• 9 years agoHelpfull: Yes(3) No(0)
• 7)27-16=11
  27-8=19
  8-19=11
  19-0=19
  11-0=11
  so ans is 11
• 11 years agoHelpfull: Yes(2) No(2)
• 2) correct series: 0,1,1,2,0.5,2,2,4,2,2,4,3,7,2
  
  0+1=1, 1/2=0.5;
  2+2=4, 4/2=2;
  4+3=7, 7/2=3.5;
  
  Ans: 3.5
• 8 years agoHelpfull: Yes(2) No(0)
• 3)10,12 diff 3 and 12*3=36
  so ans 63
• 10 years agoHelpfull: Yes(1) No(4)
• 13)115,100,86,74,65,60,_
  
  115-100=15
  86-74=14
  so on..
  the diff b/w consecutive nos are 15,14,12,9,5,x
  these are in the decreasing order ex, -1,-2,-3,-4, so next is -5
  so x=0
  hence the next term is 60. :)
  
• 9 years agoHelpfull: Yes(1) No(0)
• 5)..ans is 251.5
  
  17.5-11.5=6 *3
  35.5-17.5=18 *3
  89.5-35.5=54 *3
  ? - 89.5=162
• 9 years agoHelpfull: Yes(1) No(0)
• Ans. 18)
  13*2 - 5=21
  21*2 - 10=32
  32*2 - 15=49
  49*2 - 20=78
  78*2 - 25=131
  131*2 - 30=232
• 7 years agoHelpfull: Yes(1) No(0)
• 8) 40-39=1, 39-37=2, 37-33=4, 33-26=7 ,26-15=11 first difference
  2-1=1 , 4-2 =2 , 7-4=3, 11-7 = 4 (1,2,3,4) hence the next is 5
  then after 11 the difference should be 16
  then 15-x= 16 , x=-1
  ans is -1
• 7 years agoHelpfull: Yes(1) No(0)
• 2) ans=1
  (0,1,1,2),(0,5,2,2),(4,2,2,4),(3,7,2,?)
  0+1+1+2=4
  0+5+2+2=9
  4+2+2+4=12
  3+7+2+x=12+x
  
  4 9 12 12+x
  5 3 1
  Hence,12+x=12+1
  x=13-12=1(ans)
  
• 11 years agoHelpfull: Yes(0) No(12)
• 17) ans-12
  divide into 4 parts-
  (8,5,9),(7,2,2.5),(5,1,16),(8,6,4)
  take first term from all four i.e, 8,7,5,8
  8-1=7
  7-2=5
  5+3=8
  8+4=12
• 10 years agoHelpfull: Yes(0) No(5)
• 4)4,2,4,8,6,8,16
  
  (4,2,4) (8,6,8) (16 ? ?)
  4*2=8 (side term)
  8*2=16 (side term)
  so,(4,2,4) (8,6,8) (16 ? 16)
  2* 3=6 (middle term)
  6*3=18 (middle term)
  Hence, (4,2,4) (8,6,8) (16,18,16)
  5)11.5,17.5,35.5,89.5
  diff of two consecutive terms
  17.5-11.5=6, 35.5-17.5= 18, 89.5-35.5=54
  so we get, 6,18,54 next term is 54*3=162
  therefore ans is 162+89.5=251.5
• 10 years agoHelpfull: Yes(0) No(2)
• 4) 4-2=2; 4-8=-2; 6-8=-2; 16-14=2; ans 14 2,-2,-2 then 2 series
  
• 9 years agoHelpfull: Yes(0) No(1)
• 5)11.5 17.5 35.5 89.5
  Thier difference is 6 18 54 nd hence after difference is 162
  So,next number is 151.5
  
• 9 years agoHelpfull: Yes(0) No(4)
• 7) (8,16,3,27),(4,8,7,19),(2,0,7,X)
  8+16+3=27
  4+8+7=19
  2+0+7=9
  
  
• 9 years agoHelpfull: Yes(0) No(0)