Question 813658
Hexadecimal numbers are made using the 16 "digits" 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F. How many four-digits-long hexadecimal numbers begin with one of the 6 letters and end with one of the 10 digits (0 through 9) and the middle two characters could be any of the 16 "digits", possibly repeated?
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6*10 = 60 possible combos of 1st and 4th digits.
60*256 = 15360 Hex numbers that fit