Number Series Test 2 (1.5 Minutes Per Question)

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Ashwin
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Quizzes Created: 6 | Total Attempts: 760
| Attempts: 104
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  • 1/10 Questions

    In the following number series only one number is wrong. Find the wrong number.130   129   154    203   284   405

    • 130
    • 129
    • 154
    • 203
    • 284
    • 405
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About This Quiz

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.

Number Series Test 2 (1.5 Minutes Per Question) - Quiz

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  • 2. 

    20  10  12  15  30  75  225

    • Option 130

    • 15

    • 12

    • 75

    • 225

    Correct Answer
    A. 12
    Explanation
    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.

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  • 3. 

    39  43  51  60  87  110  167

    • 39

    • 43

    • 51

    • 60

    • 87

    • 110

    Correct Answer
    A. 110
    Explanation
    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 .

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  • 4. 

    3   4   12   45   198   1005   6066

    • 4

    • 6066

    • 45

    • 198

    Correct Answer
    A. 198
    Explanation
    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...

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  • 5. 

    What will come in place of the question mark (?) in the given number series ?123, 140, 106, 157, 89, ?

    • 214

    • 139

    • 169

    • 174

    Correct Answer
    A. 174
    Explanation
    123 +17 = 140
    140-34 = 106
    106+ 51 = 157
    157- 68=89
    89 + 85 = 174.

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  • 6. 

    190, 94, 46, 22, ?, 4

    • 19

    • 15

    • 10

    • 8

    Correct Answer
    A. 10
    Explanation
    190*0.5 - 1 = 94
    94*0.5 - 1 = 46
    46*0.5 - 1 =22
    22*0.5 - 1 =10.

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  • 7. 

    320, 308, 284, 236, 140, ?

    • -52

    • -50

    • 92

    • 114

    Correct Answer
    A. -52
    Explanation
    320-12 = 308
    308 - 24 = 284
    284-48 = 236
    236 - 96 = 140
    140 - 192 = -52.

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  • 8. 

    3, 4, 9, 28, 113, ?

    • 566

    • 384

    • 424

    • 646

    Correct Answer
    A. 566
    Explanation
    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 = 566

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  • 9. 

    8, 4, 6, 15, ?, 236.25

    • 52.5

    • 36

    • 64.5

    • 84

    Correct Answer
    A. 52.5
    Explanation
    8 * 0.5 = 4
    4 * 1.5 = 6
    6 * 2.5 = 15
    15 * 3.5 = 52.5

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  • 10. 

    95, 115.5, 138, ? , 189

    • 154.5

    • 164.5

    • 162.5

    • 166.5

    • None of these

    Correct Answer
    A. 162.5
    Explanation
    The pattern is +20.5, +22.5, +24.5, +26.5, ....

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Quiz Review Timeline (Updated): Mar 16, 2023 +

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  • Current Version
  • Mar 16, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Aug 14, 2017
    Quiz Created by
    Ashwin
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