Multiple Choice Questions on What will come in place of the question mark in the following number series 3 7 15 31 63 255 ........ for Logical Reasoning ( All Exams ) Preparation

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Multiple Choice Questions

What will come in place of the question mark in the following number series 3 7 15 31 63 255 ........

Logical Reasoning(Master ) Number series
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    What will come in place of the question mark in the following number series?

    3, 7, 15, 31, 63, ? , 255

    125

    Incorrect Answer

    112

    Incorrect Answer

    127

    Correct Answer

    118

    Incorrect Answer
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    Explanation:

    Each number in the series is one more than twice the preceding number.
    (3×2+ 1)=7
    (7×2+ 1)=15
    (15×2+1)=31
    (31×2+1)=63
    (63×2+1)=127
    (127×2+1)=255

    By: ASRAF UDDIN AHMED
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