CAT Practice : Exponents and Logarithms

Basic Identities

Basic identities of Logarithm

    Q.8: Find
    1. 4
    2. 3


 

  • Correct Answer
    Choice B. 3

Detailed Solution


Let a =


We know that
Hence form above
Now rewritting the equation
Using a we get
i.e.,
Solving we get a = 2 or 1

If a = 2, Then and


Or

If a = 1, Then and


Correct Answer: 3



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More questions from Exponents and Logarithms

  1. Logarithm - Inequalities
  2. Logarithm - Simple
  3. Logartihm - Quadratic Equations
  4. Logartihm - Algebra
  5. Logarithm - Inequalities
  6. Logarithms - Different bases
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