Latest IBM Aptitude Question SOLUTION: Q. What is the next number of the following sequence 1) 13,24,36,23,34,56,33,44,96,43,54,? 2) 18, 24, 5, 21, 27, 8, 17, 23, 4, 24, 30, ? 3) 100, 98, 95, 90, 83, ? 4) 1, 3, 3,

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Q. What is the next number of the following sequence

1) 13,24,36,23,34,56,33,44,96,43,54,?

2) 18, 24, 5, 21, 27, 8, 17, 23, 4, 24, 30, ?

3) 100, 98, 95, 90, 83, ?

4) 1, 3, 3, 2, 8, 10, 3, 4, 12, 4, 8, ?

5) 49, 7, 98, 16, 4, 48, 9, 3, 36, 25, 5, ?

6) 9, 12, 4, 8, 12, 15, 5, 9, 3, 6, 2, 6, 6, 9, ?

7) 1,1,1,2,2,2,3,4,3,3,5,6,?

8) 33, 8, 41, 21, 67, 72, 47, 119, 124, ?

9) 1/7, 3/4, 4/9, 5/6, 7/11, 7/8, ?

10) -16,-8,4,24,12,-6,-40,?

11) -15,-14,34,32,-42,-39,58,54,-61,?

Asked In IBM Tanmoy Ghorui (10 years ago)

Unsolved Read Solution (33)

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Read Solution (33) :

nilu shaik  (10 years ago)

For Ques 2 Answer is 11
Write the series in the matrix format as given below.
18 21 17 24
24 27 23 30
5 8 4 11
Now see the pattern...18-1=17,21+3=24
24-1=23,27+3=30
5-1=4,8+3=11
So the answer is 11

Is this solution Helpfull? Yes (14) | No   

marriprudhvi  (10 years ago)

5. 7*7=49, 49*2=98
4*4=16, 16*3=48

Is this solution Helpfull? Yes (8) | No (6)  

marriprudhvi  (10 years ago)

3. 72 prime difference

Is this solution Helpfull? Yes (7) | No (1)  

ashishkhuntwal  (10 years ago)

5) 7*7 = 49 and 49*2=98
4*4=16 and 16*3=48
3*3 = 9 and 9*4=36
so next is
5*5=25 and 25*5=125
so last term is 125

Is this solution Helpfull? Yes (7) | No   

santhosh  (10 years ago)

For 11 question..sorry the answer is -56 not -66..
subtract the numbers...
-15-(-14)=-1.
34-32=2
-42-(-39)=-3
58-54=4
-61-(-56)=-5..
The answer is -56..

Is this solution Helpfull? Yes (5) | No   

upendra singh chahar  (10 years ago)

1) 156
2) 1 [(24)4+1=5,(27)7+1=8,(23)3+1=4, same (30)0+1=1]
3) 74 [83-9]
4) 12 [1*3=3,2+8=10,3*4=12,4+8=12]
5) 500 [25*(25-5)]
6) 3 [make a group of 4{9,12,4,8}{12,15,5,9}{3,6,2,6}{6,9,3,7}

Is this solution Helpfull? Yes (5) | No (9)  

shalini  (10 years ago)

9.1/7=7-1=6
3/4=4-3=1
4/9=9-4=5
5/6=6-5=1
7/11=11-7=4
7/8=8-7=1
? =?=3
ans:10/13=13-10=3 since demoniators are 1/7,4/9,7/11,? ie 10/13

Is this solution Helpfull? Yes (5) | No   

gourav chourasia  (10 years ago)

explaination of quest.2-
first term is 18..then see 4th term,which is= +3 of 18 that is 21.
again see 7th term,which is= -4 of 3rd term that is 17.
again see 10th term,which is= +7 of 4th term that is 24.
if u will follow same rule(+3,-4,+7) for 2nd term and 3rd term u will get ans = 11.

Is this solution Helpfull? Yes (3) | No   

T G  (10 years ago)

7.add 1st two term =4 th term
such as 1+1=2 ignore 3rd term i.e.1
then 2+2=4
3+3=6
and which term ignored are 1,3,5
that meanns the series will be like
1,1,1,2,2,2,3,4,3,3,5,6,4,4,7,8

Is this solution Helpfull? Yes (3) | No (2)  

nilu shaik  (10 years ago)

3)difference in term is
100-98=2
98-95=3
95-90=5
90-83=7
2,3,5,7 all are prime number next prime number is 11
so next term=83-11=72 ans

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

charan  (10 years ago)

1) 156
2) 11
3) 72
4) 12
5) 125
6) 3
7) 4
8)
9) 10/13
10) -20
11) -56

If u hv any doubts regarding these answers, let me know.

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santhosh  (10 years ago)

1)156
2)11
3)74
4)12
5)125

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santhosh  (10 years ago)

For 10 question...
-16/2=-8.
-8/2=4...remove - sign.
and 24/2=12.
12/2=-6...add - sign.
and -40/2=20...remove - sign..

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VoLdEmOrT  (10 years ago)

11. diff of 1st two -14-(-15)= +1 , diff of 2nd two 32-34= -2,similarly diff of 3rd two=+3,diff of 4th two=-4, diff of 5th two=+5. so the no is = -61+5= -56

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madhu  (10 years ago)

8)look first three numbers 33+8=41 , 67-21=46 ,
next 72+47=119 , so next is 124+46 = 170 answer

Is this solution Helpfull? Yes (1) | No (12)  

JYOTHSNA ANNAGI  (10 years ago)

1) 13,24,36,23,34,56,33,44,96,43,54
13+10=23 4th number
24+10=34 5th number
36+20=56 6th number

23+10=33 7th number
34+10=44 8th number
56+40=96 9th number

33+10=43 10th number
44+10=54 11th number
96+80=176 12th number


ans is 176
36+20=56 6th number

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santhosh  (10 years ago)

7)4
9)10/13
10)20
11)-66

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laxmi  (10 years ago)

will you please give the xplanation for 10th n 11th @santhosh

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MEGHA GUPTA  (10 years ago)

santosh please can u give me the solution??

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srujana  (10 years ago)

pls explain second one

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VoLdEmOrT  (10 years ago)

10. -20
3. 72

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anusha  (10 years ago)

please explain 8th series

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MEKAPOTHULA PRAVALLIKA  (10 years ago)

ny1 can giv xplanation for 9..?

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bindu  (10 years ago)

hi any one can send me all the solutions and useful IBM questions to my mail priyac1508@gmail.com

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HARSHA  (10 years ago)

5.Ans is...........
(7^2=49) so 49*2=98,
(4^2=16) so 16*3=48,
(3^2=9) so 9*4=36,
(5^2=25) so 25*5=125
so the next number in the series is 125

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anusha  (10 years ago)

can any one explain 6,7,8

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Lavanya Gone  (10 years ago)

-14+15=1,32-34=-2,-39+42=3,54=58=-4,so next the diff should be +5 so x+61=5, so x=-56

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BIJOY THAKKAR  (10 years ago)

-16/2=-8
-8/-2=4
24/2=12
12/-2=-6
-40/2=-20
-20/-2=10
so the ans is -20.

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mahima tiwari  (10 years ago)

3)100,98,95,90,83
100-2(prime no)=98
98-3=95
95-5=90
90-7=83
83-11(next prime no)=72(ans)
6)9+3=12/3=4+4=8
12+3=15/3=5+4=9
3+3=6/3=2+4=6
6+3=9/3=3+4=7(ans)

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Akash Vishnu Sangle   (7 years ago)

8) given series is wrong
Right series is
33, 8, 41, 46, 21, 67, 72, 47, 119, 124,?

33-25=8 and 41+5=46,
46-25=21 and 67+5=72,
72-25=47 and 119+5=124,
124-25=99 is the next number

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Subhajit Mitra  (7 years ago)

6) 9, 12, 4, 8, 12, 15, 5, 9, 3, 6, 2, 6, 6, 9, ?
(9, 12, 4, 8) ( 12, 15, 5, 9) (3, 6, 2, 6) (6, 9, a, b)
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= 6
6+3= 9; 9/3= 3; 3+4= 7
hence a= 3, b= 7.

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Amit Sarkar  (7 years ago)

12-9=3
12/3=4= 3rd number
4+4=8= 4th number
15-12=3
15/3=5=7th number
5+4=9= 8 th number
Proceed till the end
& finally
9-6=3
9/3=3 =requird number
3+4=7 =requird number

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Arghanil Das  (6 years ago)

5) ans- 125
reason:- if we make a group of 3 no.s i.e (49,7,98), (16,4,48) ,( 9,3,36) , (25,5, x) . here we need to find x.
now if we look at the groups then we can see that , in each groups the 1st element is the multiple of last element i.e the 3rd element in each respective groups.
( 49,7,98) :- 49*2= 98
(16,4,48):- 16*3=48
(9,3,36) :- 9*4=36
so in (25, 5, x) :- 25*5= 125. hence x is 125.

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