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In a certain region all license plates are composed of three letters followed by three numbers, or three numbers followed by three letters. The only restriction is that zero can never be the first of the three numbers. Find how many license plates are possible.

 Oct 15, 2020
 #1
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9 * 10 * 10    *  26 * 26 * 26      * 2  

 
 Oct 15, 2020

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