IBM
Company
Logical Reasoning
Number Series
Q. What is the next number of the following sequence
1)11.5,17.5,35.5,89.5,?
2)12,3,15,14,6,19,9,23,18,12,?
3)10,12,-36,-7,-5,15,19,21,?
4)7,0,1,8,5,12,9,26,3,23,2,?
5)3,12,29,?
6)3,8,12,48,29,?
7)1.25,3.71,1.50,1,8.1,1.75,-1,9.1,2.00,?
9)5,16,22,68,28,87,36,106,11?
Read Solution (Total 19)
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- 1.difference btw 1st and 2nd term is 6,2nd and 3rd term is 18,3rd and 4th term is 54 i.e.6,18,54 so next difference will be 162 so next term is 251.5
- 10 years agoHelpfull: Yes(24) No(0)
- 4)28
(7+0+1=8),(5+12+9=26),(3+23+2=28)
5)62
3*2+6=12
12*2+5=29
29*2+4=62 - 10 years agoHelpfull: Yes(14) No(0)
- 9)5,16,22,68,28,87,36,106,11?
5*3=15+1=16
22*3=66+2=68
28*3=84+3=87
36*3=108+4=112(its nt 106 i think)
11*3=33+5=38...is the ans. - 10 years agoHelpfull: Yes(8) No(0)
- 3) ans is 21*-3=-63 ,,12*-3=-36,-5*-3=15
4)3+23+2=28
- 10 years agoHelpfull: Yes(7) No(0)
- 2) 21
alternately there is addition of 3 - 10 years agoHelpfull: Yes(7) No(12)
- 2) 12,3,15,14,6,19,9,23,18,12
(12,3,15,14) (6,19,9,23)(18,12,x
difference between 12 and 15 is -3
in the 2nd part difernce between 6 and 9 is -3
in the same way the difference between 18 and x must be -3
so, the answer is 15 - 10 years agoHelpfull: Yes(6) No(6)
- 6)3,8,12,48,29,?
(3,8),(12,48),(29,?)
3*3-1=8
12*4+0=48
29*5+1=146 is the ans. - 10 years agoHelpfull: Yes(4) No(3)
- Ans Q)5)
1*1=1+2
3*3=9+3=12
5*5=25+4=29
7*7=49+5=54(ans) - 7 years agoHelpfull: Yes(3) No(0)
- 7) 1.25,3,7.1,1.50,1,8.1,1.75,-1,9.1,2.0 ?
1.25+0.25=1.50
3-2=-1
7.1+1=8.1
i.e. -3 ans - 10 years agoHelpfull: Yes(1) No(1)
- 5) 3 12 29
12-3=9
29-12=7
Hence,34 will b d answer(34-29=5) - 9 years agoHelpfull: Yes(1) No(6)
- 17.5-11.5=6
35.5-17.5=6*3
89.5-35.5=18*3
281.5-89.5=64*3 - 10 years agoHelpfull: Yes(0) No(3)
- 7)-3.71
from the second term gettind reduced by -2.71,-2,-2.71 altrnately - 10 years agoHelpfull: Yes(0) No(5)
- Take 3 at once,for each series adding 2 to the first term nd multiply it with -3
- 10 years agoHelpfull: Yes(0) No(0)
- 30. ans will be : -63
- 10 years agoHelpfull: Yes(0) No(0)
- srry....that will be(3). -63 ans
- 10 years agoHelpfull: Yes(0) No(0)
- 21, i guess. is it right?
- 10 years agoHelpfull: Yes(0) No(0)
- 1) 11.5,17.5,35.5,89.5,251.5... (11.5),(11.5 + 6),(17.5 + (6*3)),(35.5 + (6*3*3)),(89.5 + (6*3*3*3))....
- 9 years agoHelpfull: Yes(0) No(0)
- 5) the question is wrong
the series is
3,8,12,48,29,?
logic is 1^2+2=3,2^2*2=8,3^2+3=12,4^2*3=48,5^2+4=29,6^2*4=144 ANS - 7 years agoHelpfull: Yes(0) No(0)
- 3)10,12,-36,-7,-5,15,19,21?
diff between 1th and 2nd number = -2 (10-12)
diff between 4th and 5th number = -2
diff between 7th and 8th number = -2...
diff between 3th and 6th number = (-36-15)= -51
next number is 15-66 = -51
ans is 66. - 7 years agoHelpfull: Yes(0) No(0)
IBM Other Question
Q. What is the next number of the following sequence
39,41,25,26,27,38,40,24,25,...
Q. What is the next number of the following sequences
1)30.5,31,30,0,67.2,67,70,100,183.9?
2)52,62,42,78,89,68,49,61,39,63,76,?
3)49,6,25,4,36,5,81,5,?
4)48,24,35,7,16,8,75,15,80,40,?
5)2/3,5/3,32/6,72/3/?
6)1,1,3,1,5,3,4,10,4,2,?
7)1/5,1/2,1/3,2/5,5/3,3/5,3/2,9/5,?
8)-3,-6,-9,-82,-80,-30,-33,-36,-55,-53,-24,?