IBM
Company
Logical Reasoning
Number Series
What is the next number of the following sequences
1) 7/6,3/2,1,5/6,13/6/2,1,?
2) 1,2,2,4,8,1,8,1/2,4,1,4,4,?
3) -5,1,-11,23,29,17,-20,-14,?
4) 92,48,16,10,6.5,?
5) 0,1,0,2,2,2,3,4,5,6,6,?
6) 6,9,11,13,17,20,22,24,28,?
7) 10,15,12,17,14,10,?
8) 6, 3, 3, 9, 12, 5, 7, 35, 8, 6, 2,?
9) -5 1 -11 23 29 17 -20 -14 ?
Read Solution (Total 12)
-
- 6) 6,9,11,13,17,20,22,24,28,x
Difference is repeating like 3,2,2,4,3,2,2,4
so x-28 should be 3
x-28=3
x=31
Ans : 31
7) I guess question might be 10,15,12,17,14,19,x
2*5=10 2*7+1=15
2*6=12 2*8+1=17
2*7=14 2*9+1=19
2*8=16
so ans : 16
- 10 years agoHelpfull: Yes(16) No(0)
- Q 2): 1,2,2,4,8,1,8,1/2,4,1,4,4
sol: in dis series
1*2=2
2*4=8
8*1=8
8*1/2=4
4*1=4
and so 4*4=16(ans) - 10 years agoHelpfull: Yes(9) No(1)
- 4)ans 5.25
92/2=46+2=48
16/2=8+2=10
6.5/2=3.25+2=5.25 - 10 years agoHelpfull: Yes(8) No(0)
- Q3) -5,1,-11,23,29,17,-20,-14
sol: group these numbers in this way:
(-5,1,-11)=(-5+6=1 ,-5-6=-11)
(23,29,17)=(23+6=29 , 23-6=17)
so similary (-20,-14.?)=(-20+6=14,-20-6=-26(ans)) i.e ans is -26
- 10 years agoHelpfull: Yes(7) No(0)
- Q8) 6,3,3,9,12,5,7,35,8,6,2,?
sol:
here in this series group the numbers in this way
(6,3,3,9) (12,5,7,35) (8 ,6,2,?)
here addition of two middle element give the first element of a group as output and there multiplication gives the last element of the group as an output
(69) (12 35) ( 8 12(ans))
i.e ans is 12 - 10 years agoHelpfull: Yes(4) No(0)
- Q 9) -5 1 -11 23 29 17 -20 -14 ?
sol:group thses numbers as
(-5 ,1,-11) (23 ,29,17) (-20 ,-14 ,?)
-5+6=1 23+6=29 -20+6=-14
-5-6=-11 23-6=17 -20-6=-26(ans) i.e ans is -26 - 10 years agoHelpfull: Yes(3) No(1)
- Q6) 6,9,11,13,17,20,22,24,28
sol: 6+3=9
9+2=11
11+2=13
13+4=17
now again
17+3=20
20+2=22
22+2=24
24+4=28
so in this way '3' should be added to 28(28+3=31(ans))
i.e 28+3=31(ans)
31+2=33
33+2=35
35+4=39 - 10 years agoHelpfull: Yes(1) No(2)
- 7 ans> 10,15,12,17,14,19
15-10=5
12-15=-3
17-12=5
14-17=-3
19-14=5
hence 19-3=16 ans - 10 years agoHelpfull: Yes(1) No(0)
- 4)92/2=46 46+2=48
16/2=8 8+2=10
6.5/2=3.25 3.25+2=5.25
So 5.25!! - 10 years agoHelpfull: Yes(1) No(0)
- the series is 0,1,0,2,2,2,3,4,5,6,6,...?
( 0,1,0),(2,2,2),(3,4,5),(6,6,.) observe the third no. in each set
0-2=-2
2-5=-3
5-x=-4
x=9 - 10 years agoHelpfull: Yes(0) No(0)
- wat is the ans of qsnt no. 4 ???
- 10 years agoHelpfull: Yes(0) No(0)
- 7) alternate multiplication of 2 like first one is 2*5=10, 2*6=12, 2*7=14, 2*8=16
Ans = 16 - 9 years agoHelpfull: Yes(0) No(0)
IBM Other Question
2,6,5,1411,26,17?
What is the next number of the following sequences
1. 4,2,-4,-8,32,26,-156
2. 5,10,9,3,6,5,4,8,7,7
3. 6,18,21,8,11,33,2,6,9,5,8,24,7,21
4. 100,98,95,90,83
5. 0,1,2,0,5,2,2,2,2,4,3,2
6. (2/3),(5/3),(19/6),(31/6),(23/3),(32/3),(85/6)
7. 13,24,36,23,34,56,33,44,96,43,54
8. 5,16,22,68,28,87,34,106,11
9. 7726,635,64,9
10. 4,11,66,74,370,379,1516
11. 2,1,2,3,8,0,1,9,1,2
12. 4,2,36,4,5,1,36,16,6,3,81
13. 5,10,25,15,30,75,150,80,155,400
14. 2,3,10,15,26
15. -3,-4,-9,-28
16. 3,8,12,48,29
17. (1/2),(1/2),(1/4),(1/6),(1/8),(1/18),(1/16)