CAT Practice : Exponents and Logarithms

When we change the base, Log questions become far tougher.

Basic identities of Logarithm

    Q.7: Find x.


  • Correct Answer
    Choice C.

Detailed Solution

Let y =
We know that
Thus the equation can be written as

Solving the above equation we get
If y = 4



Correct Answer:

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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
With every extra hour you log in for this topic, it becomes exponentially simpler.