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left 4^3 times 5^4 right div 4^5 =

This question belongs to Arithmetic Ability Surds And Indices
Surds and Indices
?

$$\left[ {{4^3} \times {5^4}} \right] \div {4^5} = ?$$

Answer & Solution
Correct Answer: Option D
$$\eqalign{ & \frac{{{4^3} \times {5^4}}}{{{4^5}}} \cr & = \frac{{{5^4}}}{{{4^{\left( {5 - 3} \right)}}}} \cr & = \frac{{{5^4}}}{{{4^2}}} \cr & = \frac{{625}}{{16}} \cr & = 39.0625 \cr} $$
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