Which expression is equivalent to 81? - Vidyadip

MCQ

Which expression is equivalent to $81$?

A
$2^9$
✓
$\Big(\frac{1}{3}\Big)^{-4}$
C
$3^{-4}$
D
$\Big(\frac{1}{3}\Big)^{4}$

✓

Answer

Correct option: B.

$\Big(\frac{1}{3}\Big)^{-4}$

$\Big(\frac{1}{3}\Big)^{-4}=3^4=81$

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