• anonymous
A code word is either a sequence of three letters followed by two digits or two letters followed by three digits. (Unless otherwise indicated, letters will means letters cho- sen from the usual 26-letter alphabet and digits are selected from f0; 1; 2; 3; : : : ; 8; 9g. Also, unless it is stated that letters have to be di erent, you should assume repeats are allowed. Likewise for digits.) How many di erent code words are possible?
  • Stacey Warren - Expert
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  • katieb
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  • anonymous
Is it (26*26*10*10*10) + (26*26*26*10*10)
  • anonymous
Yep, looks right.
  • ash2326
Yeah you're correct

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