Number Series Test 2 (1.5 Minutes Per Question)
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In the following number series only one number is wrong. Find the wrong number.130 129 154 203 284 405
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130
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129
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154
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203
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284
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405
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Challenge your mathematical skills with Number Series Test 2, featuring a series of questions designed to test pattern recognition and problem-solving abilities in number series.
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- 2.
20 10 12 15 30 75 225
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Option 130
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15
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12
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75
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225
Correct Answer
A. 12Explanation
20*0.5 = 10
10*1 = 10 (Given as 12 in the question)
10*1.5=15
15*2 = 30
30*2.5 = 75 and so on.
12 is the wrong term in the series.Rate this question:
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- 3.
39 43 51 60 87 110 167
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39
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43
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51
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60
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87
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110
Correct Answer
A. 110Explanation
This question has a very interesting pattern ,
43 - 39 = 4 = 2*2
51- 43 =8 = 2*2*2
60 - 51 = 9 = 3*3
87 - 60 = 27 = 3*3*3
As we can see that differences between consecutive terms are of the form 2square, 2 cube, 3 square, 3 cube....
So after 87 we should have 87 + 4 square = 87 + 16 = 103 (Given as 110 in the question)
y - 87 = 16 = which implies y = 103
But the number given is 110 and hence 110 is the odd one out .Rate this question:
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- 4.
3 4 12 45 198 1005 6066
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4
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6066
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45
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198
Correct Answer
A. 198Explanation
3*1 + 1 = 4
4*2 + 4 = 12
12*3 + 9 = 36 + 9 = 45
45*4 +16 = 196 (given as 198 in the question)
The pattern is *1 + 1 square, *2 + 2 square, *3 + 3 square, etc...Rate this question:
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- 5.
What will come in place of the question mark (?) in the given number series ?123, 140, 106, 157, 89, ?
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214
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139
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169
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174
Correct Answer
A. 174Explanation
123 +17 = 140
140-34 = 106
106+ 51 = 157
157- 68=89
89 + 85 = 174.Rate this question:
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- 6.
190, 94, 46, 22, ?, 4
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19
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15
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10
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8
Correct Answer
A. 10Explanation
190*0.5 - 1 = 94
94*0.5 - 1 = 46
46*0.5 - 1 =22
22*0.5 - 1 =10.Rate this question:
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- 7.
320, 308, 284, 236, 140, ?
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-52
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-50
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92
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114
Correct Answer
A. -52Explanation
320-12 = 308
308 - 24 = 284
284-48 = 236
236 - 96 = 140
140 - 192 = -52.Rate this question:
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- 8.
3, 4, 9, 28, 113, ?
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566
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384
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424
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646
Correct Answer
A. 566Explanation
3*1+1 = 3+1= 4
4*2 + 1 = 8+1 = 9
9*3 + 1 = 27+1 = 28
28*4+1 = 112+1 = 113
113*5 + 1 = 565 + 1 = 566Rate this question:
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- 9.
8, 4, 6, 15, ?, 236.25
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52.5
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36
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64.5
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84
Correct Answer
A. 52.5Explanation
8 * 0.5 = 4
4 * 1.5 = 6
6 * 2.5 = 15
15 * 3.5 = 52.5Rate this question:
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- 10.
95, 115.5, 138, ? , 189
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154.5
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164.5
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162.5
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166.5
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None of these
Correct Answer
A. 162.5Explanation
The pattern is +20.5, +22.5, +24.5, +26.5, ....Rate this question:
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Current Version
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Mar 16, 2023Quiz Edited by
ProProfs Editorial Team -
Aug 14, 2017Quiz Created by
Ashwin