<PRE><B>Question 1152872</B>
There are 26 letters(A-Z) and 10 digits(0-9)
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Since letters can repeat, we have 26^3 permutations to form letters on the license plate
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Since the digits can repeat, we have 10^4 permutations to form digits on the license plate
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Since the letters can appear at the front or the back, we multiply by 2
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Therefore,
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There are 2 * 26^3 * 10^4 = 351,520,000 license plates
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