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$(1000)^{7}\div 10^{18}=?$

10
100
1000
10000
Explanation:

$(1000)^{7}\div 10^{18}$

$=\dfrac{(1000)^{7}}{10^{18}}$

$=\dfrac{10^{(3 \times 7)}}{10^{18}}$

$=\dfrac{10^{21}}{10^{18}}$

$=(10)^{(21-18)}$
$=10^{3}=1000$
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