121. Find the next term of the following series.
8,0.5,16,4,15,0.3,50,4.5,6,0.2,30,?
Answer: 1.2
Explanation:8/0.5=16 and 8*0.5=4
15/0.3=50 and 15*0.3=4.5
6/0.2=30 and 6*0.2=1.2
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IBM
122. Find the next term of the following series.
3/2, 2 1/4, 9/4, 7/2, 12 1/4, 49/4, 4/3, 1 1/7, 16/9, ?
Answer: 64/49
Explanation:(3/2)^2=9/4
(7/2)^2=49/4
(4/3)^2=16/9
(8/7)^2=64/49
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IBM
123. Find the next term of the following series.
1, 3, 1, 2.5, 5, 1, 4, 5, 4, 8, 7, ?
Answer: 9.5
Explanation:1+3+1=5
5/2=2.5
5+1+4=10
10/2=5
4+8+7=19
19/2=9.5
Workspace
IBM
124. Find the next term of the following series.
1, 1, 3, 2, 1, 5, 3, 4, 10, 4, 2, ?
Answer: 10
Explanation:1+1=2+1=3
2+1=3+2=5
3+4=7+3=10
4+2=6+4=10
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IBM
125. Find the next term of the following series.
5, 5, 7, 7, 9, 11, 11, 13, 13, 17, 15, 19, 17, ?
Answer: 23
Explanation:5+2=7
7+4=11
11+2=13
13+4=17
17+2=19
19+4=23
so the answer is 23
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IBM
126. Find the next term of the following series.
7 -35 -34 -3 15 16 4 ?
Answer: -19
Explanation:7* -5 =-35
-35+1=36
-3*-5=15
15+1=16
4*-5=-20
-20+1=-19
Workspace
IBM
127. In this question, one term in the number series is wrong. Find out the wrong term
93, 309, 434, 498, 521, 533
Answer: 521
Explanation:93 + 6^3 = 309
309 + 5^3 = 434
434 + 4^3 = 498
498 + 3^3 = 525 (not 521)
525 + 2^3 = 533
Workspace
IBM
128. In this question, one term in the number series is wrong. Find out the wrong term
1, 5, 5, 9, 7, 11, 11, 15, 12, 17
Answer: 12
Explanation:Separate the series as below.
1,5,7,11,12
5,9,11,15,17
Both series have the rule of adding +4 then +2 alternatively,
Like 5, 5+4=9, 9+2=11, 11+4=15, 15+2=17
But in the first series, 1, 1+4=5, 5+2=7, 7+4=11, 11+2=13 not 12
Workspace
IBM
129. In this question, one term in the number series is wrong. Find out the wrong term
3, 4, 10, 32, 136, 685, 4116
Answer: 32
Explanation:3*1+1=4
4*2+2=10
10*3+3=33
So 32
Workspace
IBM
130. Find the next term of the following series.
-5,1,-11,23,29,17,-20,-14
Answer: -26
Explanation:(-5) *2 = -10 - (1) = -11
(23) *2 = 46 - (29) = 17
(-20) *2 = -40 - (-14) = -26
Workspace
IBM
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