IBM
Company
Numerical Ability
Sequence and Series
What is the next number of the following sequence
1) 5,6,6,5,6.5,8,7,9.5,?
2) 3,8,12,48,29,?
Read Solution (Total 5)
-
- 1^2+2=3
2^2*2=8
3^2+3=12
4^2*3=48
5^2+4=29
6^2*4=144 ans
- 9 years agoHelpfull: Yes(9) No(0)
- nadiya please do not post wrong Q
series lyk this 5,6,6.5,6.5,8,7,?
logic is increment 1.5 on 1st nd 3rd,3rd and 4th and so on
similarly increment 0.5 on 2nd and 4th and so on so ans is 7.5
3,8,12,48,29,?
3*3-1=8
12*4-0=48
so that 29*5+1=146 ANS
- 10 years agoHelpfull: Yes(6) No(5)
- ya neeraj i faced the exam...............my suggestion is simply u go on prepare questns on this site definitely u will crack the exam.....all the best
- 10 years agoHelpfull: Yes(1) No(0)
- hey nadiya have u faced the exam or ur preparing?? i'hv me exam on 19th.. pls tell some tips to prepare and what to practice...
- 10 years agoHelpfull: Yes(0) No(0)
- 1. ans is 9.5 itz not 7.5 once observe the series
- 10 years agoHelpfull: Yes(0) No(0)
IBM Other Question
What is the next number of the following sequence
1) 3,4,12,6,1,8,8,4,5,6,30,__
2) 0,1,1,2,0.5,2,2,4,2,2,4,3,7,2,?
3) 1,1,2,4,6,36,39,1521,?
4) 7,4,6,3,4.5,1.5,2.25,? Ans: -0.75
5) 2,9,5,49,11,169,? Ans:22
6) 49,7,98,16,4,48,9,3,36,25,5,?
7) 2,6,5,14,11,26,17,? Ans:60
8) 7,0,1,8,5,12,9,26,3,23,2,? Ans:28
9) 2,3,10,15,26,? Ans:35
10) 5,16,22,68,28,87,36,106,11,? Ans:45
11) 7776,625,64,9,?
12) 13,24,36,23,34,56,33,44,96,43,54,? Ans:116
13) 0,1,2,0.5,2,2,2,2,4,3,2,? Ans:3.5
14) 18,24,5,21,27,8,17,23,4,24,30,? Ans:9
15) 3,5,2,100,4,7,3,196,1,6,5,? Ans:144
16) 8,5,9,7,2,25,5,1,16,8,6,? Ans:15
17)-3,6,1,-2,4,-1,-1,2,-3,?
18)1/4,1/4,1/2,3/2,6,? Ans:30
19) 8,0.5,16,4,15,0.3,50,4.5,6,0.2,30,?
20) 9,4,16,6,36,21,441,? Ans:421
21) 4,2,5,9,5,11,13,7,16,17,9,?
22) 33,8,41,46,21,67,72,47,119,124,?
23) 3,2,1,4,5,4,1,0,6,3,?
24) 30.5,31,30,0,67.2,67,70,100,183.9?
25) 48,24,35,7,16,8,75,15,80,40,?
26) 1.8,3,0,6,2.5,5,0.5,3.4,2,1.7,4.8,6,? Ans=0.8
27) 1370,1320,1070,-180,?
28) 9,3,24,4,9,3,36,6,9,3,30,?
29) 52,62,42,78,89,68,49,61,39,63,76,?
30) -16,-8,4,24,12,-6,-40,?
31) 49,6,25,4,36,5,81,5,?
32) 9,3,6,21,9,12,33,15,18,?
33) 12,3,15,14,6,19,9,23,18,12,?
34) -15,-14,34,32,-42,-39,58,54,-61,?
35) 38,36,76,35,114,34,?
36) 30.5,31,30,0,67.2,67,70,100,183.9,?
37) 11,8,17,14,23,24,31,32,?
38) 10,12,-36,-7,-5,15,19,21,?
39) 44,4.4,0.88,0.264,0.1056,?
40) 11.5,17.5,35.5,89.5,?
41) 2,3,10,15,26,35,50,?
42) 1/3,1/2,1/4,2 1/3,3 1/2, 4 1/4, 4 1/3, 6 1/2,?
43) 1.25,3,7.1,1.5,1,8.1,1.75,-1,9.1,0.75,2. 00
44) 5,1,2,8,1,0,9,2,3,14,1.3,2,?
45) 1 ,3 ,1 ,2.5 ,5 ,1 ,4 ,5 ,4 ,8 ,7
46) 41.45 ,41.5 ,42 ,18.23 ,18.2 ,18
47) 11 ,8 ,17 ,14 ,23 ,24 ,31 ,32
48) 4 ,3 ,144 ,1.5 ,2 ,9 ,3.2 ,2
49) 4.2 ,7.2 ,11.4 ,6.1 , 9.1 , 15.2 ,3.8 , 6.8
50) 1/5 , 1/2 , 1/3 , 2/5 ,1, 2/3, 3/5, 1 1/2 ,1, 4/5
51) 5, 1, 2, 8, 8, 1, 0, 9, 9, 2, 3
52) 5, 1, 2, 8, 1, 0, 9, 2, 3, 14, 1, 3
53) 6, 3, 3, 9, 12, 5, 7, 35, 8, 6, 2
54) 24, 42, 1/2, 2, 65, 56, 1 1/5, 5/6, 73, 37
55) 4, 2, 5, 9, 5, 11, 13, 7, 16, 17, 9
56) 8, 16, 3, 27, 4, 8, 7, 19, 2, 0, 7
57) 5/6, 1/3, 1/2, 1/2, 2/8, 1/4, 5/6, 1/6, 2/3, 1/2, 1/3
58) 115, 100, 86, 74, 65, 60
59) 100, 98, 95, 90, 83
60) 0, 8, 12, 26, 23
61) 7.2, 2.2, 3.2, 16, 11, 12, 60, 55, 56
62) 18, 24, 5, 21, 8, 27, 17, 23, 4, 24, 30
63) .7 , 1.2, 1.2 , 2.2 , 1.7, 3.2, 2.2, 4.2 , ?
.7+.5=1.2+.5=1.7 ans 2.7
64) 81, 9^2, 162, 49, 7^2, 98, 25, 5^2, 50, 64, 8^2 ?
81*2=162 so,ans = 64*2= 128
65) 1, 1, 2, 4 , 6, 36, 39, 1521, ?
66) 2, 3, 10, 15, 26, 35,50, ?
67) 2, 8, 3, 27, 4, 64, 5, 125, 6, 216, ?
See alternate no.s -> 2, 3, 4.ans=7
68) 2, 3, 6, 13, 28, ?
*2-1, *2+0, *2+1.ans= 28*2+3= 59
69) 38, 36, 76, 35, 114, 34, ?
Alternate -> 38+38=76 76+38=114
114+38=152 (ans)
70) 1/5, 1/2, 1/3, 2/5 , 1, 2/3,3/5, 3/2, 1, 4/5, ?
Alternate starting with 1/2 ; skip 2 and -> 1/2, 1, 3/2 , 2 (ans =2)
71) 96, 64, 128, 192, 128, 256, 288, 192, ?
Break ques like(96, 64, 128,) (192, 128, 256,) (288, 192, ?)
First*2=second set\'s numbers. First*3= third set. Ans=128*3
72) 1370, 1320, 1070, -180, ?
diffrnc-> -50, -250, -1250 -> 50*5, 250*5, next will be -1250*5
73) 3, 2, 1, 4, 5, 4, 5, 1, 0, 6, 3, 2, ?
3,( 2, 1), 4,( 5, 4), 5, (1, 0), 6, (3, ?) second term one less . so ans = 2
74) 1 1 1 2 2 2 3 4 3 3 5 6 ?
(1 1) 1 2 (2 2) 3 4 (3 3) 5 6 ? ans=4
75) 507, 169, 248, 62, 36, 12, 168, 42, 168 ?
(507= 169*3), 248, 62, (36=12*3), 168, 42, (168=x*3)-> x=56(ans)
76) 7.2, 2.2, 3.2, 16, 11, 12, 60, 55, 56, ?
7.2 + 8.8= 16+ 44= 60 + 2.2= 62.2 (ans) [not sure about answer]
77) 2, 6, 5, 14, 11, 26, 17 , ?
Alternate starting with first: +3 , +6 , +6
Now starting with second number: +8, +12 , +12 . so ans = 26+12
78) 115, 100, 86, 74, 65, 60, ?
Difference : 15, 14, 12,9, 5 Now difference of these : 1, 2, 3, 4, next 5
So 5-5=0 Ans=60-0=60
79) 8 5 9 7 2 25 5 1 16 8 6 ?
(8 -5=3 ) -> 3^2=9 (7-2=5)->5^2= 25 5 1 16 (8- 6=2) so answer 2^2=4
80) -5 1 -11 23 29 17 -20 -14 ?
-5 (1 -12=-11) 23 (29 -12=17) -20 (-14 -12=-26) ans=-26
81) 3,7,10,8,4,12,0,5,5,3,2,?
Ans:(Divide the 3 elements into one group ) 3+7=10,8+4=12,0+5=5,so 3+2=5 is the answer.
82) 0,1,1,2,0.5,2,2,4,2,2,4,3,7,2,?
83) 1,1,2,4,6,36,39,1521,?
84) 7,4,6,3,4.5,1.5,2.25,? Ans: -0.75
85) 2,9,5,49,11,169,? Ans:22
86) 49,7,98,16,4,48,9,3,36,25,5,?
87) 2,6,5,14,11,26,17,? Ans:60
88) 7,0,1,8,5,12,9,26,3,23,2,? Ans:28
89) 2,3,10,15,26,? Ans:35
90) 5,16,22,68,28,87,36,106,11,? Ans:45
91) 7776,625,64,9,?
92) 13,24,36,23,34,56,33,44,96,43,54,? Ans:116
93) 0,1,2,0.5,2,2,2,2,4,3,2,? Ans:3.5
94) 18,24,5,21,27,8,17,23,4,24,30,? Ans:9
95) 3,5,2,100,4,7,3,196,1,6,5,? Ans:144
96) 8,5,9,7,2,25,5,1,16,8,6,? Ans:15
97) -3,6,1,-2,4,-1,-1,2,-3,?
98) 1/4,1/4,1/2,3/2,6,? Ans:30
99) 1/4, 1/4, 1/2, 3/2, 6, ?
100) 0.8, 1.8, 3.6, 3.6, 4.6, 9.2, 9.2, 10.2, ?
101) 22, 19.5, 21.45, 33, 30.5, 33.55, 44, 41.5, ?
102) 15 3/4, 16, 26, 9 1/5, 9, 19, 64 2/3, 65, 75, 30 3/8, ?
103) 3, 2, 1, 4, 5, 4, 5, 1, 0, 6, 3, ?
104) 3/2, 2 1/4, 9/4, 7/2, 12 1/4, 49/4, 4/3, 1 1/7, 16/9, ?
105) 18, 24, 5, 21, 27, 8, 17, 23, 4, 24, 30, ?
106) 100, 98, 95, 90, 83, ?
107) 1, 3, 3, 2, 8, 10, 3, 4, 12, 4, 8, ?
108) 49, 7, 98, 16, 4, 48, 9, 3, 36, 25, 5, ?
109) 9, 12, 4, 8, 12, 15, 5, 9, 3, 6, 2, 6, 6, 9, ?
110) 5/6, 1/3, 1/2, 1/2, 2/8, 1/4, 5/6, 1/6, 2/3, 1/2, 1/3, ?
111) 33, 8, 41, 21, 67, 72, 47, 119, 124, ?
112) 1/7, 3/4, 4/9, 5/6, 7/11, 7/8, ?
113) 7, 4, 6, 3, 4.5, 1.5, 2.25, -0.75, ?
114) 1,2,3,6,11,20,37,68,_____
(sum of previous two+ current face value Ans=20+37+68)
115) 9,3,24,4,9,3,36,6,9,3,30,____
(pattern is x*3,x*6 Ans=5)
116) 44,4.4,.88,.264,0.1056,____
(x*.1,x*.2,x*.3.....Ans=0.5*0.1056)
117) 38,36,76,35,114,34,____
(Ans=38*4)
118) -12,6,-15,-5,28,-14,9,3,-18,____
(Ans=9)
119) 5,1,2,8,8,1,0,9,9,2,3,______
(Ans=14)
120) 56,89,33,21,57,88,35,19,60,85,30,____
(Ans=24)
121) 3,4.5,7,4,6,5.5,5,7.5,10,6,______
(Ans=9.0)
122) 7,-35,-34,-3,15,16,4,________
(Ans=-20)
123) 11,8,17,14,23,24,31,32,______
(Ans=43)
124) 1.8,3,0.6,2.5,5,0.5,3.4,2,1.7,____
(Ans=4.5)
125) 1,2,3,611,20,37,68,________
(This question got repeated for me twice same as 1)
126) 9,3,6,21,9,12,33,15,________
(Ans= 33-15)
127) -16,-8,4,24,12,-6,-40,_______
(Ans=-20)
128) 4.2,26.0,8.9,8.4,52.0,17.8,16.8,104.0,_______
(Ans=17.8*2)
129) 340,680,1428,3141.6,________
130) 7,-14,-4,15,-30,-20,-21
131) 11.5,17.5,35.5,89.5,__
132) 4,2,4,8,6,8,16,__
What is the next number of the following sequence
33, 8, 41, 21, 67, 72, 47, 119, 124,...