Write in scientific notation: $(400000)^{4}$

6.4 \times 10^{20}

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2.56 \times 10^{20}

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2.56 \times 10^{22}

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6.4 \times 10^{19}

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Solution

The correct option is C $2.56 \times 10^{22}$
$(400000)^{4} = 4^{4} \times 10^{20}$
$\Rightarrow (400000)^{4} = 256 \times 10^{20} = 2.56 \times 10^{22}$
Ans-Option $C$ .

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Similar questions

\frac{10^{22} + 10^{20}}{10^{20}}

\frac{10^{22} + 10^{20}}{10^{20}}

Question 7

The value of $\frac{10^{22} + 10^{20}}{10^{20}}$ is
(a) 10
(b) $10^{42}$
(c) 101
(d) $10^{22}$

1200 \times 3200

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