Multiple Choice Questions on There are n zeros appearing immediately after the decimal point in the value of 0 2 25 It is given t........... for CDS Exam Preparation

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Multiple Choice Questions

There are n zeros appearing immediately after the decimal point in the value of 0 2 25 It is given t...........

Quantitative Aptitude (CDS) Simplification
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    There are n zeros appearing immediately after the decimal point in the value of (0.2)25. It is given that the value of log10 2 = 0.30103. The value of n is

    25

    Incorrect Answer

    19

    Incorrect Answer

    18

    Incorrect Answer

    17

    Correct Answer
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    Explanation:

    Lets say, (0.2)25= x
    log (0.2)25 = log x
    25log (0.2)=log x
    25(log 2 - log 10=log x
    25(0.30101-1)=log x
    log x = -17.47475

    Therefore, Characteristic=17=number of zeroes immediately after decimal point in (0.2)25

    By: Munesh Kumari
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