odd man out and series
 

  1. Question: `582, 605, 588, 611, 634, 617, 600`

    A
    `634`

    B
    `611`

    C
    `605`

    D
    `600`

    Note: Alternatively `23` is added and `17` is subtracted from the terms. So, `634` is wrong
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  2. Question: `46080, 3840, 384, 48, 24, 2, 1`

    A
    `1`

    B
    `2`

    C
    `24`

    D
    `384`

    Note: The terms are successively divided by `12, 10, 8, 6, ...........etc. So, `24` is wrong.
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  3. Question: `1, 8, 27, 64, 124, 216, 343`

    A
    `8`

    B
    `27`

    C
    `64`

    D
    `124`

    Note: The numbers are `1^3, 2^3, 3^3, 4^3` etc. So, `124` is wrong ; it must have been `5^3 i e 125.`
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  4. Question: `5, 16, 6, 16, 7, 16, 9`

    A
    `9`

    B
    `7`

    C
    `6`

    D
    None of these

    Note: Terms at odd places are `5, 6, 7, 8` etc. and each term at even place is `16`. So, 9 is wrong
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  5. Question: `6, 13, 18, 25, 30, 37, 40`

    A
    `25`

    B
    `30`

    C
    `37`

    D
    `40`

    Note: The difference between two successive terms from the beginning are `7, 5, 7, 5, 7, 5` So, `40` is wrong
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  6. Question: `56, 72, 90, 110, 132, 150`

    A
    `72`

    B
    `110`

    C
    `132`

    D
    `150`

    Note: The numbers are `7 xx 8, 8 xx 9, 9 xx 10, 10 xx 11, 11 xx 12, 12 xx 13`. So, `150` is wrong
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  7. Question: `8, 13, 21, 32, 47, 63, 83`

    A
    `47`

    B
    `63`

    C
    `32`

    D
    `83`

    Note: Go on adding `5, 8, 11, 14, 17, 20` So, the number `47` is wrong and must be replaced by `46`
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  8. Question: `105, 85, 60, 30, 0, - 45, - 90`

    A
    `0`

    B
    `85`

    C
    `- 45`

    D
    `60`

    Note: The numbers are squares of odd natural numbers , starting from 5 upto `15` So, `36` is wrong
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  9. Question: `4, 6, 8, 9, 10, 11, 12`

    A
    `10`

    B
    `11`

    C
    `12`

    D
    `9`

    Note: Each number is a composite number except `11`
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  10. Question: `125, 127, 130, 135, 142, 153, 165`

    A
    `130`

    B
    `142`

    C
    `153`

    D
    `165`

    Note: Prime numbers `2, 3, 5, 7, 11, 13` are to be added successively. So, `165` is wrong.
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