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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

Sum of values of x and y satisfying the equation 3^x - 4^y = 77; 3^ x/2 - 2^y = 7 is :

Options

  1. A2
  2. B3
  3. C4
  4. D5.

Correct answer

D. 5.

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