IBM series questions asked in 1 FEB 2013
1)1,3,4,5,13,2,3,4,2,2,1,2,3....

2)7,19,43,91,187

3)2,3,10,15,26,35,50

4)13,14,15,16,18,19,20,22,23.......

5)2,3,6,13,28........

6)5,10,9,3,6,5,4,8,7,7.....

7)5,17,35,65

8)1,0.5,1,0.5,2,5,0.9,0.3,1.7,10,12,0.25,12.25....

9)1,7,9,15............

10)9,15,26/3,29/2,25/3,14,8,26/2,23,3...........

11)18,6,24,4,30,10,12,2,6............

12)44,4.4,0.88,0.264,0.1056.............

13)9,3,24,4,9,3,36,6,9,3,30

14)-13,-14,34,32,-42,-39,58,54.........

• 2)379
  3)63
  5)59
  6)14
  7)113
  
  
• 11 years agoHelpfull: Yes(24) No(3)
• 3ans..2,3,10,15,26,35,50....2+1=3..3+7=10...10+5=15..15+11=26..26+9=35..35+15=50
  1,7,5,11,9,15...diff b/w these no's is +6 -2 +6 -2 +6..then 15-2=13
  finally 50+13=63(ans)
  12ans...44*1 =44/10=4.4
  4.4*2 =8.8/10=0.88
  0.88*3 =2.64/10=0.264
  0.264*4 =1.056/10=0.1056
  0.1056*5 =5.280/10=0.5280
• 11 years agoHelpfull: Yes(21) No(2)
• (13).Ans is 5
  9/3=3,24/6=4,9/3=3,36/6=6,9/3=3,so 30/6=5
• 11 years agoHelpfull: Yes(20) No(3)
• 7 ans: i think 35 will replace 37
  2^2+1=5, 4^2+1=17, 6^2+1=37, 8^2+1=65, x
  x=10^2+1`=101
  so ans is 101
• 11 years agoHelpfull: Yes(17) No(14)
• (13,14,15,16),(18,19,20),(22,23),(25)ans
  1st-4consicutive numbers
  2nd 3---------------n--rs
  3rd 2---------------n--rs
  4rth 1
  
  and after each thjer is one number is missing so 25 is ans
• 11 years agoHelpfull: Yes(17) No(2)
• (11).
  18/3=6,24/6=4,30/3=10,12/6=2,6/3=2
  so ans is 2
• 11 years agoHelpfull: Yes(17) No(0)
• 6)5,10,9,3,6,5,4,8,7,7.....
  [5],10,9,[3],6,5,[4],8,7,[7]..
  5*2=10
  10-1=9
  3*2=6
  6-1=5
  4*2=8
  8-1=7
  7*2=14..ANS
  
• 11 years agoHelpfull: Yes(17) No(0)
• 2ans...7,19,43,91,187
  7*2=14+5=19
  19*2=38+5=43......187*2=374+5=379(ans)
• 11 years agoHelpfull: Yes(16) No(1)
• 6.)5,10,9,3,6,5,4,8,7,7
  5*2-1=9
  3*2-1=5
  4*2-1=7
  7*2-1=13
  next term is 7*2=14
• 11 years agoHelpfull: Yes(16) No(7)
• 12)44,4.4,0.88,0.264,0.1056.............
  ans=0.1056*5=0.5280/10=0.05280
  from starting 44*1=44/10=4.4
  4.4*2=8.8/10=0.88 so on...........
• 11 years agoHelpfull: Yes(15) No(1)
• (10).it is like..
  27/3,30/2,26/3,29/2,25/3,28/2,24/3,27/2,23/3,26/2,22/3...
  so ans should be=22/3
• 11 years agoHelpfull: Yes(14) No(2)
• 1) Series is missing
  1,3,4,5,13,2,3,4,22,1,2,3,?
  1+3+4+5==13
  13+2+3+4==22
  22+1+2+3==28
  
  
  Ans 28
• 10 years agoHelpfull: Yes(13) No(0)
• 9)17
  12)0.05280
  13)8
  14)question incomplete, the series will be -13,-14,34,32,-42,-39,58,54,-61,?........
  ans:-56
• 11 years agoHelpfull: Yes(10) No(7)
• 12)44,4.4,0.88,0.264,0.1056............
  Ans 0.0528
  series goes by multiples of .1,.2,.3,.4 ie (44*.1=4.4,4.4*0.2=.88... .1056*.5=0.0528)
• 11 years agoHelpfull: Yes(9) No(0)
• 7 ans)5,17,35,65
  pyramid series
  5 17 35 65 ?((65+48=113)
  12 18 30 ?(30+18=48)
  6 12 ?(12+6=18)
  6 ?(6)
  
  ans:113
• 11 years agoHelpfull: Yes(6) No(6)
• (1)1+3+4+5=13,13,2+3+4+2+2=13,1+2+3+7=13
  so ans is 7.
• 10 years agoHelpfull: Yes(6) No(13)
• 14),
  (-13*1,14*1),(34,32),(-14*3,-13*3),(58,54),(-13*5,-14*5)
• 10 years agoHelpfull: Yes(6) No(3)
• 5)2,3,6,13,28,......
  3*2+0=6
  6*2+1=13
  13*2+2=28
  28*2+3=59
  
• 10 years agoHelpfull: Yes(5) No(1)
• 9) 1+6=7
  7+2=9
  9+6=15
  15+2=17
• 11 years agoHelpfull: Yes(3) No(3)
• 9 ans)1,7,9,15....
  sol.1)+6,+2,+6,+2,.....17
  sol.2)1+7=8+1=9
  7+9=16-1=15
  15+11=26+1=27....depends on options given
  
• 11 years agoHelpfull: Yes(3) No(3)
• 14 ans)
  (-13,-14),(34,32),(-42,-39),(58,54)
  1 2 3 4
  can go for trail and error method with diff 5 of two negative numbers
• 11 years agoHelpfull: Yes(3) No(0)
• (3).
  (1)^2+1,(2)^2-1,(3)^2+1,(4)^2-1,(5)^2+1,(6)^2-1,(7)^2+1,(8)^2-1=63
  so ans is 63
• 11 years agoHelpfull: Yes(3) No(0)
• 7..> i think answer to this question would be 119 because 17-5=12,35-17=18,65-35=30 and difference between 18-12=6,30-18=12,which means series is progressevly increasing so next term would be 24 which is added to 30 i.e 54..... which is added to 65 giving the net result of 119.
• 10 years agoHelpfull: Yes(3) No(0)
• act ans of (10):(27/3),(30/2)(26/3)(29/2)(25/3)(28/2)(24/3)(27/2)(23/3)(26/2)(22/3)(24/2) above q. hav some defect
• 10 years agoHelpfull: Yes(3) No(0)
• 4)13,14,15,16,18,19,20,22,23.....
  
  (13,14,15,16) 16+2 (18,19,20) 20+2 (22,23) 23+2 (25)
  ans 25
• 10 years agoHelpfull: Yes(3) No(0)
• 2)379
  3)63
  4)25
  5)59
  6)14
  7)113
• 11 years agoHelpfull: Yes(2) No(0)
• 7,19,43,91,187
  Ans 369 (since the second term is multiplied by *2 (12,24,48,96,182)
  
  7+12=19
  19+24=43
  43+48=91
  91+96=187
  187+182=369
• 11 years agoHelpfull: Yes(2) No(0)
• 7)5,17,35,65
  Ans 257
  
  Solution : (power increments in even series )
  2^2 +1=5 2^4 +1=17 2^6 +1=65 2^8 +1=257
  Ans 257
  
• 11 years agoHelpfull: Yes(2) No(9)
• 1) wrong
  2) 379
  3) 63
  4) 25
  5) 59
  6) 14
  7) 113
  8) wrong
  9) 17
  10) wrong
  11) ----
  12)0.0528
  13) 5
  14) 65 70
• 8 years agoHelpfull: Yes(2) No(0)
• 1)if the qstn is 1,3,4,5,13,2,3,4,22,1,2,3.... then ans=28
  2)379
  3)63
  4)25
  5)59
  6)14
  7)113
  8)qstn wrong
  9)17
  10)qstn wrong
  11)2
  12)0.0528
  13)5
  14)insufficient data or series can not be determined without another number
• 7 years agoHelpfull: Yes(2) No(0)
• 9)17
  1-7 = 6
  9-7 = 2
  15-9 = 6
  15-17 = 2
  so 17
• 10 years agoHelpfull: Yes(1) No(0)
• 7) 5 + 4 * 3 = 17
  17 + 6 * 3 = 35
  35 + 10 * 3 = 65
  so the next one could be 65 + 18 * 3 = 119
• 9 years agoHelpfull: Yes(1) No(2)
• 1)1,3,4,5,13,2,3,4,22,1,2,3....
  ans=28
  (1+3+4+5=13,13+2+3+4=22,22+1+2+3=28)
  
  2)7,19,43,91,187,.......
  ans=379
  (7*2+5=19,
  19*2+5=43,
  43*2+5=91,
  91*2+5=187,
  187*2+5=379)
  
  
  3)2,3,10,15,26,35,50,......
  ans=63
  (2+1=3,
  3+7=10,
  10+5=15,
  15+11=26,
  26+9=35,
  35+15=50,
  50+13=63)
  
  
  4)13,14,15,16,18,19,20,22,23.......
  ans=25
  (13,14,15,16,18,
  19,20,22,
  23,25)
• 7 years agoHelpfull: Yes(1) No(0)
• 6.ans)5,10,9,3,6,5,4,8,7,7
  4 number series:
  (5,10,9,3)
  (6,5,4,8)
  (7,7,x,y)
  
  in 2nd column series is diff of -5,+2
  it may be same for the 3rd column too then ans is 6
• 11 years agoHelpfull: Yes(0) No(6)
• 9)17
  12) 0.0528
• 11 years agoHelpfull: Yes(0) No(0)
• 9/3
  24/4
  9/3
  36/6
  9/3
  30/8(ans
  )
  
• 11 years agoHelpfull: Yes(0) No(2)
• 3) 82
  a series generate by leave a one and forward..
• 10 years agoHelpfull: Yes(0) No(0)
• Q.5>2,3,6,13,28....
  
  2*1-0=2
  2*2-1=3
  2*3-2=6
  2*4-3=13
  2*4-4=28
  2*5-5=59
• 10 years agoHelpfull: Yes(0) No(0)
• 3)63
  7)28
  9)28
• 10 years agoHelpfull: Yes(0) No(0)
• 12) I think series will be
  0.44,4.4,0.88,0.264,0.1056
  
  0.44*10 = 4.4
  4.4*0.2 = .88
  .88*0.3 = 0.264
  0.264*.4 = 0.1056
  0.1056*0.5 = 0.05880
  ............
  
• 9 years agoHelpfull: Yes(0) No(0)
• 1.Ans:
  
  2.Ans: 7,19,43,91,187,.........?= 379
  
  (1*2+5=7),(7*2+5=19),(19*2+5=43),(43*2+5=91),(91*2+5=187),(187*2+5=379).
  
  
  
• 9 years agoHelpfull: Yes(0) No(0)
• ans (4) 25
• 9 years agoHelpfull: Yes(0) No(0)
• 13)
  9/3=3
  24/4=6
  9/3=3
  36/3=6
  9/3=3
  30/5=6
  so the answer is 5
• 9 years agoHelpfull: Yes(0) No(0)
• (7 * 2 ) + 5 = 19
  (19 * 2) + 5 = 43
  (43 * 2) + 5 = 91
  (91 * 2) + 5 = 187
  (187 * 2) + 5 = 579
  Answer = 579
• 8 years agoHelpfull: Yes(0) No(0)
• 7) 5,17,35,65
  
  2^2+1=5,
  4^2+1=17,
  6^2+1=37,
  8^2+1=65.
  10^2+1=101
  in question number 7 pls replace 35 with 37.
• 8 years agoHelpfull: Yes(0) No(0)
• 2) 379
  3) 63
  4) 25
  5) 59
  6) 14
  7) 113
  9) 17
  11 )2
  12) 0.05280
  13) 5
  14) -43,-48
• 7 years agoHelpfull: Yes(0) No(0)
• 7) 119
  Because 5*2 + 7 =17
  17*2 + 1 = 35
  35*2-5 = 65
  65*2-11 = 119
  Every number is multiplied by 2 and is decreased by the series of 6
  9) 17
  Series is +6 +2 +6 +2 added accordingly
  2) 379
  Every number is muliplied by 2 and the previous number in the series and 5 is added
  6) 14
  Every tuple is in the arithmetic of 5, 5*2,5*2-1,
  3,3*2,3*2-1,
  4,4*2,4*2-1,
  Similarly, 7,7*2,7*2-1
• 6 years agoHelpfull: Yes(0) No(0)
• 6. 5,10,9,3,6,5,4,8,7,7,?
  (5,10,9) (3,6,5) (4,8,7) (7, x, x)
  5*2=10
  3*2=6
  4*2=8
  7*2=14
• 6 years agoHelpfull: Yes(0) No(0)