Latest IBM Aptitude Question SOLUTION: 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

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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

Asked In IBM charan (10 years ago)

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RAKESH  (10 years ago)

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

Is this solution Helpfull? Yes (48) | No (2)  

Arun kumar voruganti  (10 years ago)

9-5=4 then 4*4=16.
16-10=6 then 6*6=36,
36-15=21 then 21*21=441,
441-20=421....

Is this solution Helpfull? Yes (9) | No   

gowthami kumaravadivel  (10 years ago)

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

Is this solution Helpfull? Yes (3) | No   

Lakshmi  (10 years ago)

12/4=3,15/5=3,6/2=3.. so 9/3=3
ans is 3

Is this solution Helpfull? Yes (1) | No   

Vivek Gupta  (7 years ago)

Ans. 421
9-4 = 5
16-6 =10
36-21=15
so following the series
441-20 = 421

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