IBM
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Logical Reasoning
Number Series
Q. Solve the following Sequence.
1. 33, 8, 41, 21, 67, 72, 47, 119, 124, ..... ?
2. 7, 4, 6, 3, 4.5, 1.5, 2.25, -0.75, ..... ?
3. 7, 6, 8, 5, 3, 7, ..... ?
4. 9, 18, 21, 25, 20, ..... ?
5. 30, 28, 25, 20, 34, 28, ..... ?
6. 3, 3, 4, 8, 10, 36, ..... ?
7. 3, 2, 1, 4, 5, 4, 1, 0, 6, 3, ..... ?
Read Solution (Total 23)
-
- 3)7,6,8,5,3,7,3
see first no 7 and then 5
now
7-1=6
7+1=8
so after 7 next decreasing odd series is 5
so 5-2=3
5+2=7
so answer will be 3 as it is next decreasing odd series..
hope u all get solution - 11 years agoHelpfull: Yes(48) No(2)
- 2)-1.125
7-4=3 and next term is 4*1.5=6
similarly 6-3=3 and next term is 3*1.5=4.5
hence answer is -.75*1.5=-1.125 - 11 years agoHelpfull: Yes(38) No(8)
- 6. 3,4,10
3,8,36
then 3*1+1=4
4*2+2=10
10*3+3=33
then next series
3*2=2=8
8*4+4=36
36*6+6=222 so therefore next series is 33,222 - 11 years agoHelpfull: Yes(17) No(0)
- 1.248
as in if we follow adding firstly two digits and then adding 5 while adding next two digit
as
33+8=41
41+21+5=67
72+47=119
119+124+5=248
- 11 years agoHelpfull: Yes(12) No(2)
- 1)
33+8 = 41 33-8 = 25
46 + 21 = 67 46 - 21 =25
72 + 47 = 119 72-47 = 25
124 + 99 124 - 99 = 25 answer = 99 - 11 years agoHelpfull: Yes(11) No(15)
- 4) (9,18) >> Diff is 9 which is 3*3
(21,25) >> Diff is 4 which is 2*2
(20,?) >> Considering diff is 1 which can be written as 1*1
Hence answer is 21 - 11 years agoHelpfull: Yes(9) No(8)
- 5) 30, then 28,25 having diff=3,then 20,now 34,28 having diff=3*2=6, THEN IT SHOULD BE 10(like a decreasing by step 10-->30,20,10,0,...) with two nos after each with [diff of multiples of 3]
thus the series is-->
30,28,25,20,34,28,10.
ans=10
- 11 years agoHelpfull: Yes(8) No(8)
- 1. 33+8=41
46+21=67
72+47=119
again 67-41=26
119-67=52
next difference will be (26*3=78)
119+78=197
So the next term of the series will be 197-124=73 - 11 years agoHelpfull: Yes(5) No(12)
- leave the first word next digit
4*1.5 = 6
3*1.5 = 4.5
1.5* 1.5 =2.25
-.75* 1.5 = -1.125
- 11 years agoHelpfull: Yes(5) No(0)
- 2)
7-4= 3 , 4*1.5 = 6
6-3=3, 3*1.5 = 4.5
4.5-3=1.5, 1.5*1.5 = 2.25
2.25-3=-0.75, -.75*1.5 = -1.125 - 11 years agoHelpfull: Yes(5) No(0)
- 1. 248(119+124+5 as done in 41+21+5=67).
2. -1.125.
3. 3.
4. 1.
5. 25.
6. 33.
7. 6(3-1=2+3=5,5-1=4+2=6,6-1=5+1=6). - 11 years agoHelpfull: Yes(4) No(2)
- 1) 33-8=25
41-21=20
67-72=-5
72-47=-25
119-124=-5
so 124-x=20
so x should be 144
- 11 years agoHelpfull: Yes(2) No(3)
- 4)9*2-0=18
9*3-6=21
9*4-11=25
9*5-15-20
9*6-18=36 - 11 years agoHelpfull: Yes(2) No(2)
- For Q4.
9,18,21=3*3,3*6,3*7(i.e 2nd digit is increasing in +3, +1)
25,20,?=5*5,5*4,5*?(i.e 2nd digit is decreasing by -1 so next decreasing will be -3 )
so the 2nd digit for 5*? is 4-3=1,
so the ans is 5*1=5 - 11 years agoHelpfull: Yes(2) No(3)
- for 4
3*3=9(3+3=6) 5*5=25(5+5=10)
3*6=18(3+6=9) 5**4=20(5*4=9)
3*7=21(3+7=10) 5*1=5(5+1=6)so answer should be 5
- 11 years agoHelpfull: Yes(1) No(2)
- 2)
4+3=7,
3+3=6
1.5+3=4.5
-0.75+3=2.25
so ans is -2
- 11 years agoHelpfull: Yes(0) No(15)
- 4)3*3=9
3*6=18
3*7=21
5*5=25
5*4=20
so,next increment by 1 dat is 5
5*5=25
so ans is 25
- 11 years agoHelpfull: Yes(0) No(20)
- ans=29
3*10=30
4*7=28
3*8=25
4*5=20
3*11=33+1=34
4*7=28
3*9=27+2=29
so like(one digrement and one ingrement valu than adding 1,2,3etc... Ingremented) - 11 years agoHelpfull: Yes(0) No(8)
- 4) as 3 pair of are of increasing odd number
(9+8+21)/3=16
(25+20+X)/5=16
X=35 - 11 years agoHelpfull: Yes(0) No(3)
- 3)7-1=6
7+1=8
8-3=5
5-2=3
5+2=7
7-3=4
ans. 4 - 11 years agoHelpfull: Yes(0) No(1)
- 6) Take triplets like 3,3,4
So, you can see that 3/3 = 1 and 3+1=4
Similarly take triplet 4,8,10
So you can see that 8/4 = 2 and 8+2=10
Therefore we can infer that 36/10 = 3.6 so our answer would be 36+3.6 = 39.6 - 11 years agoHelpfull: Yes(0) No(1)
- 7. 3-2=1
15-10=5
35-26=9
now...(5-1)=(9-5)=4..
so d answr s 50+13=63.. - 11 years agoHelpfull: Yes(0) No(3)
- 33-8=25 ,33+8=41
25+2*21=67
72-47=25,72+47=119
25+2*124=273
So,273 is the answer - 10 years agoHelpfull: Yes(0) No(1)
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