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  • Question
  • If logxl+m-2n = logym+n-2l = logzn+l-2m , then xyz is equal to


  • Options
  • A. 0
  • B. 1
  • C. lmn
  • D. 2

  • Correct Answer



  • Logarithm problems


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    • 1. Find the logarithm of 144 to the base 23 :

    • Options
    • A. 2
    • B. 4
    • C. 8
    • D. None of these
    • Discuss
    • 2. If log72 = m, then log4928 is equal to ?

    • Options
    • A. 1/(1+2m)
    • B. (1+2m)/2
    • C. 2m/(2m+1)
    • D. (2m+1)/2m
    • Discuss
    • 3. If logx916 = -12, then the value of x?

    • Options
    • A. -3/4
    • B. 3/4
    • C. 81/256
    • D. 256/81
    • Discuss
    • 4. If logaab = x, then logbab = ?

    • Options
    • A. 1/x
    • B. x/(x+1)
    • C. x/(1-x)
    • D. x/(x-1)
    • Discuss
    • 5. If log 27 = 1.431, then the value of log 9 is

    • Options
    • A. 0.754
    • B. 0.854
    • C. 0.954
    • D. 0.654
    • Discuss
    • 6. If log 64 = 1.8061, then the value of log 16 will be (approx)?

    • Options
    • A. 1.9048
    • B. 1.2040
    • C. 0.9840
    • D. 1.4521
    • Discuss
    • 7. A fast moving superfast express crosses another pasenger train in 20 seconds. The speed of faster train is 72 km/hr and speeds of slower train is 27 km/h. Also the length of faster ntrain is 100m, then find the length of the slower train if they are moving in the same direction.

    • Options
    • A. 100 m
    • B. 125 m
    • C. 150 m
    • D. 175 m
    • Discuss
    • 8. If log8x = 313 then find the value of x?

    • Options
    • A. 25
    • B. 32
    • C. 37
    • D. None of these
    • Discuss
    • 9. if logab+logba=loga+b,then

    • Options
    • A. a + b = 1
    • B. a - b = 1
    • C. a = b
    • D. ab=1
    • Discuss
    • 10. For x?N, x>1 , and p=logxx+1 , q=logx+1x+2 then which one of the following is correct?

    • Options
    • A. p < q
    • B. p = q
    • C. p > q
    • D. can't be determined
    • Discuss


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