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NDA2011MathematicsBasics of MathematicsActual

What is the value of ₂ ( ₃ 81 ) ?

Options

  1. A2
  2. B3
  3. C4
  4. D9

Correct answer

A. 2

Step-by-step solution

aligned & Let, ₃ ⁸¹=x 3^x=81=(3)^4 x=4 & and let ₂ ^4=y (2)^y=4=(2)^2 y=2 & ₂ ( ₃ ⁸¹ )=2 aligned

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