A license plate has 6 characters the first three are letters thesecond three are

Question

A license plate has 6 characters the first three are letters thesecond three are numbers.
a) If the letters and numbers can be repeated how manycombinations are possible?
b)If the letters can not be repeated how many combinations arepossible?
Show Your work
I don't know how to work it i kind of have an idea but I'm notsure of the number they all seem too large.
a) If the letters and numbers can be repeated how manycombinations are possible?
b)If the letters can not be repeated how many combinations arepossible?
Show Your work
I don't know how to work it i kind of have an idea but I'm notsure of the number they all seem too large.

Explanation / Answer

26 letters 10 numbers (0 to 9) a)(266)103 b)(26x25x24x23x23x21)x103          letters cannot be repeated, but numbers can

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