Question 330559
there are 26 different letters (a-z) and 10 digits (0-10)

3 letters (assuming repetition allowed) = 26*26*26 or 26^3=17576
3 digits (assuming repetition is alllwed)= 10*10 *10=1000

so number of plates with 3 letters followed by 3 digtis = 26^3 * 10^3=17,576,000