2003 AMC 10B Question 10 - thichhoctoan.com

Question 10

Nebraska, the home of the AMC, changed its license plate scheme. Each old license plate consisted of a letter followed by four digits. Each new license plate consists of three letters followed by three digits. By how many times is the number of possible license plates increased?

$\dfrac{26}{10}$
$\dfrac{26^2}{10^2}$
$\dfrac{26^2}{10}$
$\dfrac{26^3}{10^3}$
$\dfrac{26^3}{10^2}$