Latest IBM Aptitude Question SOLUTION: 3,8,12,48,29.? 0,1,1,2,5,2,2,4,2,2,4,3,7,2,? 2,9,5,49,11,169,? 2,6,5,14,11,26,17,? 5,16,22,68,28,87,36,106,11,? 30.531,30,0,67.2,67,70,100,183.9,? 48,24,35,7,16,8,75,15,80,40,? 340

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(#M40040896) IBM Logical Reasoning question Number Series Keep an EYE

3,8,12,48,29.?
0,1,1,2,5,2,2,4,2,2,4,3,7,2,?
2,9,5,49,11,169,?
2,6,5,14,11,26,17,?
5,16,22,68,28,87,36,106,11,?
30.531,30,0,67.2,67,70,100,183.9,?
48,24,35,7,16,8,75,15,80,40,?
340,680,1428,3141.6,?
3/2,2 1/4,9/4,7/2,12 1/4,49/4,4/3,1 1/7,16/9,?
15 3/4,16,26,9 1/5,9,19,64 2/3,65,75,30 3/8,?
22,19.5,21.45,33,30.5,33.55,44,41.5,?
-3,6,1,-2,4,-1,-1,2,-3,?
7.2,2.2,3.2,16,11,12,60,55,56,?
96,64,128,192,128,256,288,192,?
0,8,12,26,23,?
41.45,41.5,42,18.23,18.2,18,?

Asked In IBM Jagriti Goswami (9 years ago)

Unsolved Read Solution (43)

Is this Puzzle helpful?   (24)   (7) Submit Your Solution Number Series

Read Solution (43) :

Ramrup Chatterjee  (9 years ago)

2,9,5,49,11,169,?
2
3^2=9
5
7^2=49
11
13^2=169
so next term=17

Is this solution Helpfull? Yes (23) | No (9)  

MONIA  (9 years ago)

2,6,5,14,11,26,17....
alternate 2,5,11,17 are prime nos
alternate are also prime nos 3,7,13,19 but multiplied by 2

Is this solution Helpfull? Yes (22) | No   

sravani  (9 years ago)

340,680,1428,3141.6,?
multiply alternatively with 2, 2.1 , 2.2 ,2.3 ,
therefore ans is 3141.6*2.3=7225.68

Is this solution Helpfull? Yes (21) | No   

sindhu  (9 years ago)

Q) 7.2, 2.2, 3.2, 16, 11 12, 60, 55, 56, ?

7.2 - 5 = 2.2 ; 2.2+1 = 3.2 ; 3.2 * 5 =16,
16 - 5 = 11 ; 11+1 = 12 ; 12 * 5 = 60,
60 - 5 = 55 ; 55+1 = 56 ; 56 * 5 = 280.

Ans: 280

Is this solution Helpfull? Yes (18) | No   

vandana verma  (9 years ago)

0 1 1 2 0.5 2 2 4 2 2 4 3 7 2
answer:
0+1=1
next term is 2
and half of 0+1 is 0.5
similarly
2+2=4
next term is 2
and half of 2+2 is 2
next
4+3=7
next term is 2
and half of 4+3 is 3.5
so the next term will be 3.5.
hence 3.5 is the answwer.

Is this solution Helpfull? Yes (17) | No (2)  

Ramrup Chatterjee  (9 years ago)

2,6,5,14,11,26,17,?
ans:-2
2*3=6
5
2*7=14
11
1*13=26
17
2*19=38
so ans=38

Is this solution Helpfull? Yes (15) | No (32)  

Kunal Kumar  (9 years ago)

(1st):- 3(1^2+2) , 8(2^2*2), 12(3^2+3), 48(4^2*3), 29 (5^2+4),...... 144(6^2*4).
(3rd):- 2, 9 (3^2), 5(diff. from 1st term 3), 49(7^2), 11(diff. from 3rd term 6), 169(13^2),..... 20(diff. from 5th term 9).

Is this solution Helpfull? Yes (14) | No (7)  

ANKITA Burbure  (9 years ago)

3rd---all are prime numbers with alternate squares..2,3^2,5,7^2,11,13^2,...17(ans)

Is this solution Helpfull? Yes (14) | No (3)  

aditya kuamr mishra  (9 years ago)

5,16,22,68,28,87,36,106,11,?
5*3=15+1=16
22*3=66+2=68
28*3=84+3=87
36*3=108+4=112
11*3=33+5=38

ans is 38

Is this solution Helpfull? Yes (11) | No (18)  

vitoba  (9 years ago)

22,19.5,21.45,33,30.5,33.55,44,41.5,?
(22,19.5,21.45),(33,30.5,33.55),(44,41.5,X)
19.5 + 2.5 = 22
19.5 + 1.95 = 21.45

30.5 + 2.5 = 33
30.5 + 3.05 = 33.55

41.5 + 2.5 = 44
41.5 + 4.15 = 45.65

Is this solution Helpfull? Yes (8) | No (3)  

chandravardhan  (9 years ago)

Q 3,8,12,48,29.?

STEP-1 (3,8) (12,48) (29,?)
STEP-2 (8-3= 5), (48/12= 4), (32-29= 3)
So 5, 4, 3

ans 32

Is this solution Helpfull? Yes (7) | No (33)  

RAJIB BANERJEE  (9 years ago)

340,680,1428,3141.6,?

Ans : 7225.68

340*2.0=680,
680*2.1=1428,
1428*2.2=3141.6
3141.6*2.3=7225.68

Is this solution Helpfull? Yes (7) | No   

ragavendra  (9 years ago)

15 3/4,16,26,9 1/5,9,19,64 2/3,65,75,30 3/8,?
ans:30

Is this solution Helpfull? Yes (7) | No (3)  

Akhil Baluja  (9 years ago)

96,64,128,192,128,256,288,192,?
-->96-64=32*4=128
192-128=6484=256
288-192=96*4=384(ans)

Is this solution Helpfull? Yes (6) | No   

amritha  (9 years ago)

15 3/4,16,26,9 1/5,9,19,64 2/3,65,75,30 3/8,?
convert the fraction into decimal 15 3/4 =15.75 since aftr decml pnt it is > than 0.5 take the next number to 15 i.e 16 add 10 to it 26 for 9 1/5= 9.2 decimal pnt is

Is this solution Helpfull? Yes (6) | No (2)  

Teja Ram Mathi  (9 years ago)

1st) 3,8,12,48,29,??
ans:) the squares of 1,2,3,4,5,...... = 1, 4, 9, 16, 25, 36, 49,.......
add and multiply respectively to squares +2, *2, +3, *3, +4, *4,.............
This gives 3, 8, 12, 48, 29, 144........
so the answer is 144

Is this solution Helpfull? Yes (5) | No (3)  

Ramesh  (9 years ago)

2,6,5,14,11,26,17,?
Actually 2,3,5,7,11,13,17,19 these are prime numbers.. carefully observe the series
2,2*3,5,7*2,11,13*2,17,19*2... So my ans is 38

Is this solution Helpfull? Yes (4) | No   

Pammi Rani  (9 years ago)

2, 9, 5, 49, 11, 169, 17


2, 3*2, 5, 7*2, 11, 13*2, 17

Is this solution Helpfull? Yes (3) | No (3)  

vaishali  (9 years ago)

48,24,35,7,16,8,75,15,80,40,?
24×2=48
7×5=35
8×2=16
15×5=75
40×2=80
X×5=40
X=8
Thus answer is 8.

Is this solution Helpfull? Yes (3) | No (16)  

Bharath B  (9 years ago)

In the series 7.2,2.2,3.2,16,11,12,60,55,56,?
7.2 - 5 = 2.2 + 1 = 3.2 * 5 = 16
16 - 5 = 11 + 1 = 12 * 5 = 60
60 - 5 = 55 + 1 = 56 * 5 = 280 => ANS

Is this solution Helpfull? Yes (3) | No   

Pradip Vadarale  (9 years ago)

[96 64 128] [192 128 256 ] [288 192 ? ]

now 1st number in all group is
96*2=192
96*3=288
now 2nd number
64*2=128
64*3=192
now for 3rd number
128*2=256
128*3=384
answer is 384

Is this solution Helpfull? Yes (3) | No   

Ravi Varma K V  (9 years ago)

-3,6,1,-2,4,-1,-1,2,-3,?
-3 6 1
-2 4 -1
-1 2 -3
0 0 -5
so, ans is 0

Is this solution Helpfull? Yes (3) | No   

RAJIB BANERJEE  (9 years ago)

340,680,1428,3141.6,?

Ans : 7225.68

340*2.0=680,
680*2.1=1428,
1428*2.2=3141.6
3141.6*2.3=7225.68

Is this solution Helpfull? Yes (2) | No (1)  

mohan  (9 years ago)

48,24,35,7,16,8,75,15,80,40,?
ans:
24+24=48
7*5=35
8+8=16
15*5=75
40+40=80
23*5=115

Is this solution Helpfull? Yes (2) | No (20)  

R mamatha  (9 years ago)

it is prime order,
2,3,5,7,11,13,17
ass:17

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

Mandira Bhowmick  (9 years ago)

(4) 2, 6, 5, 14, 11, 26, 17
(2, 5, 11, 17) the difference between the nos are 3, 6, 6 respectively.
(6, 14, 26, ?) the difference between the nos are 8, 12 .. then 12 must be repeated.
Ans: 26+12=38

Is this solution Helpfull? Yes (1) | No (2)  

neha singh  (9 years ago)

(3,8,12) (48.29,_)
3+8=11+1=12
48+29=67+1=68

so 68 is the ans

Is this solution Helpfull? Yes (1) | No (11)  

happy das  (9 years ago)

(22,19.5,21.45),(33,30.5,33.55),(44,41.5,x)
21.45+12.10=33.55
33.55+12.10=45.65(ANS)

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

Satya Alugolu  (9 years ago)

2,9,5,49,11,169,?
2
3^2=9
5
7^2=49
11
13^2=169
17
so ans:17

Is this solution Helpfull? Yes (1) | No   

sravya  (9 years ago)

2, (3*2) , 5 , (7*2) , 11 , (13*2) , 17 , (19*2)
so 38 is the answer

Is this solution Helpfull? Yes (1) | No   

SOWMIYA  (9 years ago)

2,9,5,49,11,169..?
it is of the order..
2,3^2,5,7^2,11,13^2,15
so 15 shud b d answr

Is this solution Helpfull? Yes (1) | No (2)  

Gayathri R  (9 years ago)

6) this problem is solved by round of method i.e
30.5~31
67.2~67
183.9~184
frndz pls correct me if i m wrong

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

rajesh  (7 years ago)

3, 8, 12 , 48, 29, __
take perfect squares:
1, 4, 9, 16, 25, 36, 49, etc.,
alternatively,
+2, *2, +3, *3, +4, *4, etc.,
now 1 +2 = 3
4 *2 = 8
9 +3 = 12
16 *3 = 48
25 +4 = 29
36 *4 = 144 z the ans

Is this solution Helpfull? Yes (1) | No   

Santanu Panja  (9 years ago)

2 6 5 14 11 26 17 ?=39
+4 -1 +9 -3 +15 -9 +22
9-4=5 15-9=6 22-15=7

Is this solution Helpfull? Yes | No (11)  

Santanu Panja  (9 years ago)

2

+4

6

-1 9-4=5

5

+9

14

-3 15-9=6 there are two series 4 9 15 22 and -1 -3 -9

11

+15

26

-9 22-15=7

17

+22

?

Is this solution Helpfull? Yes | No (2)  

ankit kumar jha  (9 years ago)

ques: 2,9,5,49,11,169?
ans: 21
explanation: 2, (3)^2, 5, (7)^2, 11, (13)^2
i.e. (1)^2, 2, (3)^2, 5, (7)^2, 11, (13)^2
since, [1+3+1=5, 3+7+1=11]
therefore, 7+13+1=21
i.e. the next term

Is this solution Helpfull? Yes | No (9)  

ramyabatthula  (9 years ago)

2,6,5,14,11,26,17
alternate numbers:2,5,11,17 are prime
actual prime numbers:1,2,3,5,7,11,13,17,19,23
for 2 and 5 the prime number 3 is missing so the series is 2,6,5,14,11,17,23

Is this solution Helpfull? Yes | No (2)  

Monishashaik   (9 years ago)

3,8,12,48,29,_____ ans is) 144

Is this solution Helpfull? Yes | No (5)  

Amutha  (9 years ago)

2
3*2=6
5
7*2=14
11
13*2=26
17
19*2=38

Is this solution Helpfull? Yes | No   

satish kumar  (9 years ago)

4) 2,3^2,5,7^2,11,13^2,.....17......

Is this solution Helpfull? Yes | No   

Madhuri Bisen  (9 years ago)

Please help me,the question ask in ibm from this site only ,the are same

Is this solution Helpfull? Yes | No   

yashi kashiv  (7 years ago)

2,9,5,49,11,169,?
2
3^2=9
(2+3)=5
7^2=49
(5+7)=11
11
13^2=169
(11+13)=24 ans is 24

Is this solution Helpfull? Yes | No (1)  

Ayan Naskar  (7 years ago)

48,24,35,7,16,8,75,15,80,40,?
48/2=24,
35/5=7,
16/2=8,
75/5=15,
80/2=40,
now for multiple of 5 are 35,75
now, 35*3=75, then 75*3=225
next is 225/5=45
ans is 45.

Is this solution Helpfull? Yes | No   

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