Latest IBM Aptitude Question SOLUTION: 2, 3, 5, 9, 17, 33, 65

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(#M40043867) IBM Logical Reasoning question puzzel Keep an EYE

2, 3, 5, 9, 17, 33, 65

Asked In IBM vinod (9 years ago)

Unsolved Read Solution (37)

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Read Solution (37) :

DEEPTHI  (9 years ago)

129
diff 1,2,4,8,16,32,....64

65+64=129

Is this solution Helpfull? Yes (37) | No   

ayushi jain  (9 years ago)

Here the answer is 129.
3-2=1
5-3=2
9-5=4
17-9=8
33-17=16
65-33=32
and now we need 64 for the next term so
65+64=129
and 129-65=64
so answer is 129

Is this solution Helpfull? Yes (15) | No   

mounika  (9 years ago)

2,3,5,9,17,33,65, 129
2*2-1=3

3*2-1=5

5*2-1=9
.
.
.
65*2-1=129

Is this solution Helpfull? Yes (10) | No   

K.NagaSugunaManasa  (9 years ago)

2^0+1=2
2^1+1=3
2^2+1=5
2^3+1=9
2^4+1=17
2^5+1=33
2^6+1=65
so next is 2^7+1=129.

Is this solution Helpfull? Yes (5) | No   

AMAR GUPTA  (9 years ago)

129...
solution
2
3=2+1
5=3+2
9=5+4
17=9+8
33=17+16
65=33+32
129=65+64

Is this solution Helpfull? Yes (2) | No   

Anubhav  (9 years ago)

129

Is this solution Helpfull? Yes (1) | No (1)  

shweta singh  (9 years ago)

2=2*1
3=2*1+1
5=2*2+1
9=2*4+1
17=2*8+1
33=2*16+1
65=2*32+1
129=2*64+1
so, answer will be 129.

Is this solution Helpfull? Yes (1) | No   

Saumya  (9 years ago)

2+3+0=5
3+5+1=9
5+9+3=17
9+17+7=33
17+33+15=65
33+65+31=129 ans

here one more series is running
i.e
1,3,7,15,31

Is this solution Helpfull? Yes (1) | No   

Krishna Kumari B  (9 years ago)

2+2^0=3
3+2^1=5
5+2^2=9
9+2^3=17
17+2^4=33
33+2^5=65
65+2^6=129
so Ans:129

Is this solution Helpfull? Yes (1) | No (1)  

vijayakumarmanoharan16@gmail.com  (9 years ago)

2*3=6-1=5
2*5=10-1=9
2*9=18-1=17
2*17=34-1=33
2*33=66-1=65
2*65=130-1=129

Is this solution Helpfull? Yes (1) | No   

satyamadhuri.chukka  (9 years ago)

(powers(2^n)
2+1=3
3+2=5
5+4=9
9+8=17
17+16=33
33+32=65
65+94=129

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marati harika bai  (9 years ago)

129
2*2-1
3*2-1
.
.
.65*2-1=129

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ESWARA SUBRAMANIAN.K  (9 years ago)

2+1=2, 3+2=5, 5+4=9, 9+8=17, 17+16=33, 33+32=65

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G. SATYAVENI  (9 years ago)

129 is the answer
2^0=1,2^1=2,2^2=4,......................2^6=64
2+1=3,3+2=5,5+4=9,..................65+64=129

Is this solution Helpfull? Yes | No (1)  

BV LAKSHMI  (9 years ago)

2+2^0=3
3+2^1
5+2^2
......65+2^6

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sruthi  (9 years ago)

129 is answer
4*2+9=17
8*2+17=33
16*2+33=65
similarly,
32*2+65=129

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krishnaja  (9 years ago)

ans:129
difference between numbers 2 and 3 =1
3 and 5=2=>2*1
5 and 9=4=>2*2
9 and 17=8=>4*2
so difference between 33 and 65 is 32=>16*2
so next number should have a difference of 64 with 65 i.e next number will be 129

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m venkatesh  (9 years ago)

2,3,5,9,17,33,65,----------

2+1=3
3+2=5
5+2^2=9
9+2^3=17
17+2^4=33
33+2^5=65
65+2^6=129........!!!!!

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prem  (9 years ago)

ans is 129
as given series 2,3,5,9,17,33,65
diff b/t 1st tow no is 1=2^0
then 3 and 5 diff is 2=2^1
then in b/t 5 and 9 is 4=2^2

in b/t 65 and 33 diff is 32=2^5
hence next diff is 2^6=64
hence next no is 64+65=129

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POOJA SINGH  (9 years ago)

2
2+2^0=3
3+2^1=5
5+2^2=9
9+2^3=17
17+2^4=33
33+2^5=65
65+2^6=129
so answer is 129

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Udirmaan Deka  (9 years ago)

2+1=3
3+2=5
5+4=9
9+8=17
17+16=33
33+32=65
65+64=129

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Dipen Shah  (9 years ago)

diff gets doubles-->64+65=129

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K.NagaSugunaManasa  (9 years ago)

129
2+2^0=3
3+2^1=5
5+2^2=9
9+2^3=17
17+2^4=33
33+2^5=65
65+2^6=129
SO ANSWER IS 129

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swarupa  (9 years ago)

2+1=3
3+2=5
5+4=9
9+8=17
17+16=33
33+32=65
65+94=129

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Meenakshi  (9 years ago)

next term in this series is:129
this series is incremented by 1,2,4,8,16,32,64,...

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rahul jain  (9 years ago)

129
since
2*2-1=3
3*2-1=5
5*2-1=9 and so on..
65*2-1=129

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ankita gupta  (9 years ago)

in this series there is gap double i.e., 1 then 2 then 4 then 8 and in last added 32 doubles i.e. 64 and answer becomes 129.

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drishty gambhir  (9 years ago)

7) 5 17 35 65
12 18 30
3*4 3*6 3*10 3*16=48
so the next no will be 65+48=113
as the differnce between the sub series is of multiple of 2 like 3*4 n 3*6 is (6-4=2) and 3*10 n 3*6 is 4 and so on..

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Gowthami Gade  (9 years ago)

2+1=3, 3+2=5, 5+4=9, 9+8=17, 17+16=33, 33+32=65, 65+64=129. here we add 1, 2,2^2,2^3,2^4,2^5,2^6

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gnanasoundari  (9 years ago)

ans is 129
2+1=3
3+2=5
5+4=9
9+8=17
17+16=33
33+32=65
65+64=129
(2 nd term of each step is mul by 2)

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Somnath Giri  (9 years ago)

129
{(65*2)-1}

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anju.c.a  (9 years ago)

2+1=3
3+2=5
5+4=9
9+8=17
17+16=33
33+32=65
65+64=129
ans.129

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Vasanthakumar P  (8 years ago)

2 + 3 + 2^0 - 1 = 5

3 + 5 + 2^1 - 1 = 9

5 + 9 + 2^2 - 1 = 17

9 + 17 + 2^3 - 1 = 33

17 + 33 + 2^4 - 1 = 65

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Durga Bhavani Vissakodeti  (6 years ago)

2*2-1=3
3*2-1=5
.....
65*3-1=129

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maXOS  (6 years ago)

129
2+2^0 = 3 + 2^1 = 5 + 2^2 = 9 + 2 ^ 3 = 17 ...

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k.Pushpa Ramya  (5 years ago)

answer 129
2*2-1=2
3*2-1=5
5*2-1=9
9*2-1=17
33*2-1=65
65*2-1=129.

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Prasun Biswas  (5 years ago)

the gap is in the sequence 2^0 ,2^1 with an addition along the previous number and so on so at the end 2^6 =64 +65= 129

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