IBM
Company
Logical Reasoning
Number Series
Q. What is the next number of the following sequences
1) 9,4,16,6,36,21,441
2) 9,12,4,8,12,15,5,9,3,6,2,6,6,9
Read Solution (Total 5)
-
- 1) 9,4,16,6,36,21,441
(9,4),(16,6),(36,21),(441,X)
9=4+5*1
16=6+5*2
36=21+5*3
441=x+5*4 => x=441-20=421
2)9,12,4,8,12,15,5,9,3,6,2,6,6,9,X,Y
(9,12,4,8)(12,15,5,9)(3,6,2,6)(6,9,X,Y)
9+3=12,12/3=4,4+4=8
12+3=15,15/3=5,5+4=9
3+3=6,6/3=2,2+4=7
so 6+3=9, 9/3=X, X+4=Y => X=3, Y=7
- 10 years agoHelpfull: Yes(48) No(2)
- 9-5=4 then 4*4=16.
16-10=6 then 6*6=36,
36-15=21 then 21*21=441,
441-20=421....
- 10 years agoHelpfull: Yes(9) No(0)
- 9,4,16,6,36,21,441
9-5=4
4*4=16
16-10=6
6*6=36
36-15=21
21*21=441 - 10 years agoHelpfull: Yes(3) No(0)
- 12/4=3,15/5=3,6/2=3.. so 9/3=3
ans is 3 - 10 years agoHelpfull: Yes(1) No(0)
- Ans. 421
9-4 = 5
16-6 =10
36-21=15
so following the series
441-20 = 421 - 7 years agoHelpfull: Yes(1) No(0)
IBM Other Question
Q. What is the next number of the following sequences
1)0.8,1.8,3.6,3.6,4.6,9.2,9.2,10.2,?
2)11,8,17,14,23,24,31,32,?
3)(15*4+3)/4,16,26,(9*5+1)/5,9,19,(64*3+2)/3,65,75,(30*8+3)/8,?(it's like mixed fraction friends where i have mentioned * )
4)3,2,1,4,5,4,5,1,0,6,3,?
5)7.2,2.2,,3.2,16,11,12,60,55,56,?
6)3,5,2,100,4,7,3,196,1,6,5,?
7)2,9,5,49,11,169,?
8)2,6,5,14,11,26,17,?
9)22,19.5,21.45,33,26,15,-1,?
10)1/4,1/4,1/23/2,6,?
11)9,12,4,8,12,15,5,9,3,6,2,6,6,9,?
12)9,4,16,6,36,21,441,?
Q. What is the next number of the following sequence
4.2,26.0,8.9,8.4,52.0,17.8,16.8,104.0 ?