Latest IBM Aptitude Question SOLUTION: What is the next number of the following sequence 1) 0.03, 0.0018, 0.00108, 0.00648, 0.3888,? 2) 1, 2, 2, 4, 8, 1, 8, 1/2, 4, 1, 4, 4,? 3) 2, 7, -35, 7, 12, -60, 5, 10, -50,?

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What is the next number of the following sequence

1) 0.03, 0.0018, 0.00108, 0.00648, 0.3888,?

2) 1, 2, 2, 4, 8, 1, 8, 1/2, 4, 1, 4, 4,?

3) 2, 7, -35, 7, 12, -60, 5, 10, -50,?

4) 4, 11, 66, 74, 370, 379,?

5) 6, 18, 21, 8, 11, 33, 2, 6, 9, 5, 8, 24, 7, 21,?

6) 3, 4.5, 7, 4, 6, 8.5, 5, 7.5, ?

7)13, 24, 36, 23, 34, 56, 33, 44, 96, 43, 54,?

8) 40, 39, 37, 33, 26, 15,?

9)7.2, 2.2, 3.2, 16, 11, 12, 60, 55, 56,?

10) 8, 6, 22, 26, 54, 58, 86, 90, ?

11) 1, 3, 1, 2.5, 5, 1,, 4, 5, 4, 8, 7,?

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

13) 3/2, -9/4, 9/4, 7/2, 49/4, 49/4, 4/3, 16/9, 16/9, 8/3, ?

14) 5, 16, 22, 68, 28, 87, 34, 106, 11, ?

15) 1, 1, 3, 2, 1, 5, 3, 4, 10, 4, 2, ?

16) 9/8, 4/3, 17/8, 10/3, 7/3, 42/8, 10/3, 29/4, 13/3, 7/2, 16/3,?

Asked In IBM Deepika Maurya (10 years ago)

Solved Saraswathy Read Solution (30)

Is this Puzzle helpful?   (29)   (6) Submit Your Solution Sequence and Series

Read Solution (30) :

Saraswathy  (10 years ago)

4) 4, 11, 66 ,74, 370, 379, x

4 + 7 = 11 ... 11 * 6 = 66
66 + 8 = 74 ... 74 * 5 = 370
370 + 9 = 379 ... 379 * 4 = 1516

Ans : 1516

5) (6, 18, 21), (8, 11, 33) (2, 6, 9) (5, 8, 24) (7, 21, x)
6 * 3 =18
18 + 3= 21
8 + 3 = 11
11 * 3= 33
2 * 3 = 6
6 + 3 = 9
5 + 3 = 8
8 * 3 = 24
7 * 3 = 21
21 + 3 = 24

Ans : 24



6) (3, 4.5, 7), (4, 6, 8.5), (5, 7.5, x)

subtract 3rd digit - 1st digit in each group

7 - 3 = 4
8.5 - 4 = 4.5
x - 5 should be 5
x - 5 = 5
x = 10

Ans : 10



7) (13, 24, 36), (23, 34, 56), (33, 44, 96), (43, 54, x)

56 - 36 =20
96 - 56 = 40
x - 96 should be 60
x - 96 = 60
x = 156

Ans : 156

9) (7.2, 2.2, 3.2), (16, 11, 12), (60, 55, 56), x

Multiple by "5" with 3rd number in each group, u ll get 1st number

3.2 * 5 = 16
12 * 5 = 60
56 * 5 = 280

Ans : 280

11) (1, 3, 1, 2.5), (5, 1, 4, 5), (4, 8, 7, x)

1 + 3 + 1 = 5 ---> 5/2 = 2.5
5 + 1 + 4 = 10--->10/2 = 5
4 + 8 + 7 =19---->19/2 = 9.5

Ans : 9.5
12) (1, 3, 3) ( 2, 8, 10) (3, 4, 12) (4, 8 ,x)

1 * 3 = 3
2 + 8 = 10
3 * 4 = 12
4 + 8 =12

Ans : 12

15) (1, 1, 3), (2, 1, 5), (3, 4, 10), (4, 2, x)

1 + 1 + (1) = 3
2 + 1 + (2) = 5
3 + 4 + (3) = 10
4 + 2 + (4) = 10

Ans : 10

Is this solution Helpfull? Yes (27) | No (1)  

anusha  (10 years ago)

6)10
(3,4.5,7)(4,6,8.5)(5,7.5,?)

3+(1.5)=4.5, 4.5+(2.5)=7
4+(2.0)=6, 6+(2.5)=8.5
5+(2.5)=7.5 7.5+(2.5)=10

Is this solution Helpfull? Yes (13) | No (1)  

Saraswathy  (10 years ago)

8) Ans : -1
40, 39, 37, 33, 26, 15, x
40 - 39 = 1
39 - 37 = 2 [since 2 is previous difference + 1 (ie) 1 + 1 =2]
37 - 33 = 4 [2 + 2 = 4]
33 - 26 = 7 [4 + 3 = 7]
26 - 15 = 11 [7 + 4 = 11]
15 - x = 16 [11 + 5 = 16]
x = -1


10)

10) 118, 122
Divide the series like below
(8, 22, 54, 86, x) (6, 26, 58, 90,y)
1st group
8 * 3 - 2 = 22
8 * 7 - 2 = 54
8 * 11 - 2 =86
8 * 15 - 2 =118
2nd group
6 * 4 + 2 = 26
6 * 9 + 4 = 58
6 * 14 +6 = 90
6 * 19 +8 = 122

Is this solution Helpfull? Yes (12) | No   

Saraswathy  (10 years ago)

14) Ans : 38
(5, 16), (22, 68), (28, 87), (34, 106), (11, x)
5 * 3 + 1 =16
22 * 3 + 2 = 68
28 * 3 + 3 = 87
34 * 3 + 4 = 106
11 * 3 + 5 = 38

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

sowjanya  (10 years ago)

2. 1,2,2,4,8,1,8,1/2,4,1,4,4

1x2=2
2x2=4
4x2=8
8x1=8
8x1/2=4
4x1=4
4x4=16

answer is 16

Is this solution Helpfull? Yes (8) | No (15)  

Lavanya Gone  (10 years ago)

16)the correct series is 9/8,4/3,17/8,10/3,7/3,42/8,10/3,49/4,13/3,7/2,16/3
9/8+1=17/8,4/3+2=10/3,
7/3+1=10/3,42/8+2=49/4,
13/3+1=16/3,7/2+2=11/2

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

Ann Theressa  (10 years ago)

1)233.28

0.03 * 0.06 = 0.0018
0.0018 * 0.6 = 0.00108
0.00108 * 6 = 0.00648
0.00648 * 60 = 0.3888
0.3888 * 600 = 233.28

3)10

2 + 5 = 7
7 * -5 = -35
-35 / (2-7) = 7

7 + 5 = 12
12 * -5 = -60
-60 / -12 = 5

5 + 5 = 10
10 * -5 = -50
-50 / (5-10) = 10

4)1516

4 + 7 = 11
11 * 6 = 66
66 + 8 = 74
74 * 5 = 370
370 + 9 = 379
379 * 4 = 1516

5)24

(6,18,21),(8,11,33),(2,6,9),(5,8,24),(7,21,..)
6 * 3 = 18
18 + 3 = 21

8 + 3 = 11
11 * 3 = 33

2 * 3 = 6
6 + 3 = 9

5 + 3 = 8
8 * 3 = 24

7 * 3 = 21
21 + 3 = 24

Is this solution Helpfull? Yes (2) | No (5)  

IRFAN BASHA  (10 years ago)

40,39,37,33,26,15
so diff b/w 40 d 39 is 1
diff b/w 39 d 37 is 2
diff b/w 37 d 33 is 4
diff b/w 33 d 26 is 7
diff b/w 26 d 15 is 11
so diff b/w 15 d next no is 16
ans:31 r -31
if u observe diff is 1 2 4 7 11 16
1+1=2
2+2=4
4+3=7
7+4=11
11+5=16

Is this solution Helpfull? Yes (2) | No   

Krishna Kumar Rajwar  (9 years ago)

16)the correct series is 9/8,4/3,17/8,10/3,7/3,42/8,10/3,58/8,13/3,7/2,16/3
9/8+1=17/8,4/3+2=10/3,
7/3+1=10/3,42/8+2=58/8,
13/3+1=16/3,7/2+2=11/2

Is this solution Helpfull? Yes (2) | No   

Saraswathy  (10 years ago)

4) 4, 11, 66 ,74, 370, 379, x

4 + 7 = 11 ... 11 * 6 = 66
66 + 8 = 74 ... 74 * 5 = 370
370 + 9 = 379 ... 379 * 4 = 1516

Ans : 1516

5) (6, 18, 21), (8, 11, 33) (2, 6, 9) (5, 8, 24) (7, 21, x)
6 * 3 =18
18 + 3= 21
8 + 3 = 11
11 * 3= 33
2 * 3 = 6
6 + 3 = 9
5 + 3 = 8
8 * 3 = 24
7 * 3 = 21
21 + 3 = 24

Ans : 24



6) (3, 4.5, 7), (4, 6, 8.5), (5, 7.5, x)

subtract 3rd digit - 1st digit in each group

7 - 3 = 4
8.5 - 4 = 4.5
x - 5 should be 5
x - 5 = 5
x = 10

Ans : 10


15) (1, 1, 3), (2, 1, 5), (3, 4, 10), (4, 2, x)

1 + 1 + (1) = 3
2 + 1 + (2) = 5
3 + 4 + (3) = 10
4 + 2 + (4) = 10

Ans : 10

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

meenakshi gupta  (10 years ago)

13) 8/3 =>8*8/3*3 = 64/9
every new fraction has square of previous fraction

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

mathscrazy  (9 years ago)

6> 3, 4.5,7,4,6,8.5,5,7.5,?

sol: (3,4.5,7),(4,6,8.5),(5,7.5,?)

3+1.5=4.5
4.5+2.5=7
i.e.
(last term - first term) + 0.5 = middle term
u can check for other series also
now for the last series i.e.
last term = x
first term = 5
middle term = 7.5
=> x - 5 + 0.5 = 7.5
=> x - 5.5 = 7.5
=> x = 7.5 + 5.5
=> x=13

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

Pradip Vadarale  (9 years ago)

3) answer 10
2,7,-35,7,12,-60,5,10,-50,?
now,remove 2 numbers
2 7 5 ?
now
2+5=7(which is next number)
7-2=5(which is next number)
5+5=10 answer
means add 5 sub 2 alternative

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

Saraswathy  (10 years ago)

7) (13, 24, 36), (23, 34, 56), (33, 44, 96), (43, 54, x)

56 - 36 =20
96 - 56 = 40
x - 96 should be 60
x - 96 = 60
x = 156

Ans : 156

9) (7.2, 2.2, 3.2), (16, 11, 12), (60, 55, 56), x

Multiple by "5" with 3rd number in each group, u ll get 1st number

3.2 * 5 = 16
12 * 5 = 60
56 * 5 = 280

Ans : 280

11) (1, 3, 1, 2.5), (5, 1, 4, 5), (4, 8, 7, x)

1 + 3 + 1 = 5 ---> 5/2 = 2.5
5 + 1 + 4 = 10--->10/2 = 5
4 + 8 + 7 =19---->19/2 = 9.5

Ans : 9.5

Is this solution Helpfull? Yes | No   

DINESH KUMAR KK  (10 years ago)

plz give the answer for q.no 10,14,16

Is this solution Helpfull? Yes | No   

NEERAJA REDDY  (10 years ago)

14) 5 16 22 68 28 87 34 106 11 ?

5 *3=15 +1=16
22*3=66 +2=68
28*3=84 +3=87
34*3=102+4=106
11*3=44 +5=49

Is this solution Helpfull? Yes | No (11)  

DINESH KUMAR KK  (10 years ago)

thanks for uploaded the answer..............

Is this solution Helpfull? Yes | No (3)  

deepthi  (10 years ago)

1.0.03*6=0.0018
0.0018*6=0.00108
0.00108*6=0.00648
0.00648*6=0.3888
0.3888*6=0.23328

Is this solution Helpfull? Yes | No (7)  

pavani  (10 years ago)

10)ans: 118
24+30=54,56+30=86,88+30=118

Is this solution Helpfull? Yes | No (2)  

shivakumar V M C  (10 years ago)

7.ans 156
(13,24,36)(23,34,56)(33,44,96)(43,54,...)
every 1st num of bracket increses by 10 i.e 13+10=23..23+10=33 and so on
,, 2nd ,,,,,,,,,,,,,,,,,10 i.e 24+10=34..34+10=44
every 3rd ,,,,,,,,,,,,,by 20i.e 36+20=56..56+40=96..96+60=156

Is this solution Helpfull? Yes | No   

Kavita Sanjay Borade  (10 years ago)

14) 5 16 22 68 28 87 34 106 11 ?

5 *3=15 +1=16
22*3=66 +2=68
28*3=84 +3=87
34*3=102+4=106
11*3=33 +5=38

Is this solution Helpfull? Yes | No   

Satamita Basu  (10 years ago)

3/2, -9/4, 9/4, 7/2, 49/4, 49/4, 4/3, 16/9, 16/9, 8/3, ?

Is this solution Helpfull? Yes | No (1)  

Krishna Kumar Rajwar  (9 years ago)

14) 5 16 22 68 28 87 34 106 11 ?

5 *3=15 +1=16
22*3=66 +2=68
28*3=84 +3=87
34*3=102+4=106
11*3=33 +5=38

Is this solution Helpfull? Yes | No   

Sravani A  (9 years ago)

10). (8,22,54,86)
(6,26,58,90)..here
8-22=14,22-54=32,54-86=32;
6-26=20,26-58=32,58-90=32;
4-30=26..
ans is (4,30,62,94)

Is this solution Helpfull? Yes | No (1)  

Sonam keshri  (9 years ago)

6.(3,4.5,7),(4,6,8.5),(5,7.5,?)

3+3/2=4.5
4.5+2.5=7

4+4/2=6
6+2.5=8.5

5+5/2=7.5
7.5+2.5=10

ans:10

Is this solution Helpfull? Yes | No   

pallavi  (9 years ago)

6. (3,4.5,7),(4,6,8.5),(5,7.5.x)
then,7-4.5=2.5
8.5-6=2.5 because last two difference are same.
x-7.5=2.5
hence x=2.5+7.5=10

Is this solution Helpfull? Yes | No   

sivasankara reddy Y  (9 years ago)

8) 40, 39, 37, 33, 26, 15,?
difference b/w two consequtive is 1 2 4 7 11
difference in result is 1 2 3 4
sooo 11+5 is 16
next num is 15-16 is -1

Is this solution Helpfull? Yes | No   

Madhavi   (9 years ago)

6) (3,4.5,7)
(4,6,8.5)
(5,7.5,?)
3+1=4 ,4+1=5
4.5+1.5=6,6+1.5=7.5, (compare the series vertically)
7+1.5=8.5,8.5+1.5=10

Is this solution Helpfull? Yes | No (1)  

Arunava Das  (7 years ago)

3) 2, 7, -35, 7, 12, -60, 5, 10, -50, x

7-2= 5
-35/7= -5
12-7= 5
-60/12= -5
10-5= 5
-50/10= -5

Ans= 10

Is this solution Helpfull? Yes | No (1)  

jaydeep kumar  (7 years ago)

1)0.03, 0.0018, 0.00108, 0.00648, 0.3888,?

solve:- 0.03*0.06=0.0018

0.0018*0.6=0.00108

0.00108*6=0.00648

0.00648*60=0.3888

0.3888*600=233.28

so, ans is= 233.28

Is this solution Helpfull? Yes | No   

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