Question

    If (6000) 5 = 7.776 

    src='https://static.ixambee.com/public/images/quesimg/Question Bank/Quantitative Aptitude/Surds and indices/77619_342937.gif'>   10 k then what is the value of k?
    A 17 Correct Answer Incorrect Answer
    B 18 Correct Answer Incorrect Answer
    C 27 Correct Answer Incorrect Answer
    D 21 Correct Answer Incorrect Answer

    Solution

    (6000) 5 = 7.776    10 k or (6 103)5 =   10k or 65 1015 = 65  10(k-3) or 1015 = 10(k-3) or k = 15+3 = 18

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