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  • Question
  • log 9 27 - log 27 9 is equal to?


  • Options
  • A. 6 / 5
  • B. 5 / 6
  • C. 3
  • D. 32

  • Correct Answer
  • 5 / 6 

    Explanation

    Given Exp. = log927 - log279
    = log27 / log9 - log9 / log27
    = 3log3 / 2log3 - 2log3 / 3log3
    = 3/2 - 2/3 = 5/6


  • Logarithm problems


    Search Results


    • 1. 
      (log 5 3 ) x (log 3 625) is equal to?

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
    • Discuss
    • 2. 
      If log 125 / log 5 = x, then x is equal to?

    • Options
    • A. 2
    • B. 3
    • C. 4
    • D. 1 / 2
    • Discuss
    • 3. 
      If log 10 (10x) = 2.7532, then log 10 (10000x) is?

    • Options
    • A. 4.7532
    • B. 5.7532
    • C. 3 x 2.7532
    • D. None of these
    • Discuss
    • 4. 
      Given that log 10 2 = 0.3010 the value of log 10 5 is?

    • Options
    • A. 0.3241
    • B. 0.6911
    • C. 0.6990
    • D. 0.7525
    • Discuss
    • 5. 
      If p x = q, then?

    • Options
    • A. logp x = q
    • B. logx q = P
    • C. logp q = x
    • D. logq P = x
    • Discuss
    • 6. 
      If 10 x = 1.73 and log 10 1730 = 3.2380, then x is equal to?

    • Options
    • A. 1.2380
    • B. 0.2380
    • C. 2.380
    • D. 2.2380
    • Discuss
    • 7. 
      The value of log an / log abn is given by?

    • Options
    • A. 1 + logab
    • B. 1 + logb a
    • C. loga b
    • D. logb a
    • Discuss
    • 8. 
      If A = log 27625 + 7log 1113 and B = log 9125 + 13log 107 then which of the following is true?

    • Options
    • A. A > B
    • B. A < B
    • C. A =B
    • D. can't say
    • Discuss
    • 9. 
      Find the number of digits in 8 10? (Given that log 10 2 = 0.3010)

    • Options
    • A. 19
    • B. 20
    • C. 17
    • D. 10
    • Discuss
    • 10. 
      Find the no. of digits in 8 57 (given that log 102 = 0.3010)

    • Options
    • A. 52
    • B. 50
    • C. 51
    • D. 53
    • Discuss


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